This unique combination of properties allows rigid polyurethane foams to be used in many diverse applications. The proper selection of the right types of polyurethane depends on a variety of considerations. MDI PTMEG Polyether materials cured with 1,4-Butanediol have high resilience (even at low temperatures), great dynamic properties, outstanding hydrolysis resistance and improved resistance to impingement type abrasion. TDI PTMEG Polyether materials cured with MOCA have excellent low-temperature flexibility, excellent dynamic properties are resistant to microbial attack and hydrolysis. Also important with polyurethanes is to test at various levels of stoichiometry (polymer to curative ratio) because we have seen dramatic improvements in flex fatigue resistance by this chemical adjustment. All of these glycols form polyurethanes that phase separate well and form well defined hard segment domains, and are melt processable. Polyurethane Application Tips How to Apply Polyurethane: When working with any finish. Fatigue and cut growth resulting from cyclic stress-strain are related. Then, once the body has been lifted from it, the gel pad is able to return to its original shape. Abrasion is caused by many actions, such as impingement, erosion, impact, scuffing, and sliding. While Gallagher Corporation has the technical expertise and equipment to process any of these types of polyurethane, the combinations most typical to Gallagher include: TDI Polyester materials cured with MOCA produce tough elastomers that have outstanding abrasion resistance and excellent oil and aliphatic solvent resistance. Home > Polyurethane Products. Softer, temporary material is often used for short-term uses, such as baby mattresses, whereas the top-of-the-line tough luxurious foam is usually reserved for bay window cushions. The shine on this wood may be a polyurethane finish. Read our Abrasion Resistance White Paper. Like all polymers, its performance comes from its molecular make-up. This is another reason why teamwork between the design engineer, the product engineer, and our chemists is so important to problem-solving. Go to our Contact Form to get a free set of Durometer Hardness Samples. Read our Case Study on Polyurethane Abrasion Testing. In every application that would use the high shear strength of urethanes, the weakness is the dependence on a good bond between the urethane and metal. The Plei-Tech® name is known globally as quality, high performance polyurethanes. On a car, the polyurethane gives a protective varnish that helps defend the body from scratches, dents, and general weather damage. Need help? The very hard compounds (65D-70D) durometer work best in bushing and bearing applications in wet or dry environments, often where sand, grit or mud are present. Universal Urethane has 18 compression presses that mold thousands of products daily. Slabstock polyether emerged as the largest rigid polyurethane foam consumed worldwide and accounted for over 35% of total volumes in 2012. The diverse properties of castable polyurethane make it the leading choice of engineers looking for long lasting materials for their high load, high stress environments. Performance will vary based on formulation and application. The A scale is used for softer compounds; at Gallagher, the A scale is used for compounds from 55A up to 95A. Polyurethane products are often molded into foam that can serve for a variety of uses for human comfort. Some MDI Ethers can be formulated to be FDA wet and dry food approved. Strain energy is a function of both the modulus of the material and the strain cycle the material sees. Polyurethane Products is your one stop for … There are a few standard tests such as the National Bureau of Standards (NBS), DIN and the Taber Abrasion that provide guidance, but specific tests often have to be designed to closely approximate the intended service. Learn more. Polyurethane products are often molded into foam that can serve for a variety of uses for human comfort. For comparison purposes, a rubber band is about a 35A, the tire tread on your car is about a 70A, the wheels of a roller skate are about 85A and a hard hat is about a 70D. Additionally, polyurethane tends to have a long-life span (well over five decades) and requires absolutely no maintenance. Polyurethane is made from natural molecules called monomers. TDI Polyester with hardness ranging from 70A to 70D, MDI Polyester with hardness ranging from 85A to 95A, TDI PTMEG Polyether with hardness ranging from 90A to 70D, MDI PTMEG Polyether with hardness ranging from 60A to 95A, TDI Polycaprolactone with hardness ranging from 60A to 55D, NDI Polyester (Vulkollan®) with hardness ranging from 65A to 60D. Vintage Woodworks Architectural Details Direct - 903-356-2158 Don't use rollers or … In the form of gel pads, for example, the material is able to contort to the shape and weight of the body put on it, while still maintaining a strong composition. Product Insights. Custom molded polyurethane products deliver important advantages over conventional elastomers and plastics – they are stronger, tougher, more durable, and more versatile. A harder polyurethane sample will be more resistant to indentation by the indenter and thus will give a higher durometer reading. ADVANTAGES OF PIR AND PUR INSULATION PRODUCTS. Add to that the many variables which affect the abrasion rate such as pressure, temperature, velocity, and lubricity. Thermoplastic polyurethane elastomers can be molded and shaped into different parts. With our experience and knowing your field performance, we can help you select test candidates. These fabrics are used in several industries, from medical companies to the manufacture of diapers and active wear. During the construction of a building, insulating the walls with low-density rigid polyurethane can dramatically reduce heating and cooling bills by keeping the heat out during the summer, and in during the winter. Polyurethane finishes do not contain the highly noxious chemical urethane, but are made of urethane polymers (such as polyethers and polyesters), chemical solvents and curing agents. What are the Perks of Using Cast Urethane. When placed in compression urethanes can support higher loads than other elastomers of similar hardness. For this reason, durometers are available in more than one scale. For instance, it can add waterproofing to pedestrian decks, water tanks, ponds, balconies, roofs, bridges, parking decks, and so much more. The D scale durometer has a stiffer spring and a more pointed indenter; it’s used to measure the hardness of hard polyurethane. Medium durometer, resilient compounds of 85A-95A, last longest in abrasive slurry pump impellers, etc. There are a wide variety of hydroxyl and/or amine-containing raw materials (often called polyols or co-reactants) available for reaction with isocyanate-containing raw materials. Elastomers in shear are generally used in mounting and suspension applications. Spray-on polyurethane products containing isocyanates have been developed for a wide range of retail, commercial, an… Polyurethane fabric, or PUL fabric, is a waterproof fabric, typically polyester, but may be cotton or a polyblend material that has been heat-laminated to a polyurethane layer. Furniture, bedding, and seating. Deflection of a urethane system in shear is a function of three things: the shear stress, the shear modulus – G – of the urethane compound, and the thickness of the urethane. There are specific ways Gallagher has successfully overcome this weakness. NDI Polyester cured with 1,4-Butanediol is trademarked with the name Vulkollan®. Polyurethane liquid membrane offers a wide variety of benefits. The magnitude of compressive force which can be supported by a given polyurethane compound is dependent on three main factors: hardness, loaded surface condition and shape factor. It is so flexible that it is often used in products that are designed for human comfort and relaxation. The typical hardness range for polyurethane compounds processed at Gallagher is 55A up to 80D; this range can be expanded based on specific applications. MDI Polyester materials cured with 1,4-Butanediol produce FDA wet and dry food grade urethanes which are tough, abrasion and tear resistant. Rigid polyurethane (PUR) and polyisocyanurate (PIR) insulation products are highly effective, lightweight, and many can bond to most materials. The high load capacity allows molded urethane components to be made smaller resulting in reduced weight and cost of raw materials. Polyurethane Products is your one stop for the … Polyurethane die-thane tooling, poly-thane products, steel press brake tooling and more for a variety of applications. In this way, it is likewise flexible and capable of withstanding weight, giving it this unique functionality. Foam board or liquid foam can be used to manufacture a SIP. It's perfect for exterior use because it feels and sounds just like painted wood . For example, the foam can hold together many of the components in a refrigerator or hot-water heater while it continues to perform as thermal insulation. Polyurethane Products. List of best Polyurethane Products in Africa of 2020. The most common way to measure hardness is with the use of a durometer. It’s obvious, then, that abrasion is very application specific. Understanding the physical properties of the various cast types of polyurethane is key to proper design and specification of a successful urethane part. Unquestionably, the urethanes have outstanding abrasion resistance. It has several advantages over other synthetic materials. Additions larger than 130 wt% caused plasticizer bleedout. One of the most common ways to classify polyurethane elastomers is by hardness. By utilizing generous fillets, stress risers are eliminated or greatly reduced at the bonded interface. Contact us to learn more. When testing for fatigue resistance for a specific application, it’s important to test at a strain energy experienced by the part in actual service. Sheen is a matter of personal preference. Unfortunately, the post-immersion tension value is the more appropriate one for a deck coating. Today, polyurethane is used in many different applications including high-resilience foam seating, microcellular foam seals and gaskets, durable elastomeric wheels and tires, for things such as roller coasters, escalators and skateboards. For bonded urethane applications used in shear, it’s pivotal that certain design guidelines are followed. The best 10 Polyurethane Products 2020. Whether you need a commonly manufactured part, or you have a custom project, we can help produce what you need. Often found in the midsole, its elastic properties allow for it to be bent and stretched through the foot’s natural motion. Polyurethane bridges the performance gap between rubber and plastic. Polyurethane Product Portfolio See the small selection below providing some of the many product types we offer. Elastomers can be found in a number of products, from gaskets to paint rollers to gel pads. They are useful in applications that require strength, flexibility, abrasion resistance, and shock absorbing qualities. ... On the other hand, vegetable oil (for example, castor oil)-based. It’s a very versatile material that can be used for many applications. In both cases, the foam is usually behind other materials: flexible foams are behind upholstery fabrics in commercial and domestic furniture; rigid foams are between metal, or plastic walls/sheets of most refrigerators and freezers, or other surface materials in the case of thermal insulationpanels in the constr… For example, it is not unlikely for a urethane to sport a D412 tensile of 13.8 MPa (2000 psi). There is no linear relationship between the A scale and the D scale, however, a 95A is just slightly softer than a 50D. The most common way to measure hardness is with the use of a durometer. Enhancing performance with a versatile product portfolio. They will not melt if put into the wash, due to high heat resistance. It can be found in foams both rigid and flexible, chemical-resistant varnishes and coatings, special sealants, rubber adhesives and even fiberglass. ... for producing a single product with a very high yield and high. Safety and Application. Polyurethane is incredibly versatile. Hardness is defined as the relative resistance of a surface to indentation by an indenter of specified dimension under a specified load. Cast urethane is an incredibly versatile material. Elastomeric memory allows polyurethane to return to its original shape when stretched, bent or deformed; Superior durability and resiliency at harder durometers; Outstanding impact and abrasion resistance; Physical properties can be engineered to meet demanding specifications Use natural bristle for oil-based finishes and synthetic filament (polyester, nylon, or a blend of the two) for water-based and water-based oil-modified finishes. Given the general elasticity and strength of polyurethane, it makes it the ideal material for things like watch straps, where the wearer is looking for both comfort and flexibility. Consider the physical properties of hardness, fatigue, shear, and abrasion resistance. For example: An alcohol (R-OH) An amine (R-NH 2 ), and. Hardness is defined as the relative resistance of a surface to indentation by an indenter of specified dimension under a specified load.. Isocyanates are a family of highly reactive, low molecular weight chemicals. Footwear, especially athletic footwear, is dependent on the special properties of polyurethane in order to provide a supportive and comfortable base. At the same time, it is so durable that it can be used in tires for heavy machinery. When laying down a wooden floor, polyurethane allows the wood to maintain its look while still protecting against the elements (especially water-rot). Choose the right brush. polyurethane definition: 1. a plastic used especially as a type of varnish or as a protection for delicate objects 2. a…. There are 14 types of rubber in general use. It is a 12 part enclosure for a computer tomograph (CT) device. Custom molding of cast polyurethane Polyurethane product design and development Polyurethane mold making and machining . Even water (H 2 O) These three reactions are of principle interest. This foam can differ in terms of density, firmness, durability, and quality. These products can be applied with the same equipment used for petroleum-based polyurethane foam products. They are widely used in the manufacture of flexible and rigid foams, fibers, coatings such as paints and varnishes, and elastomers, and are increasingly used in the automobile industry, autobody repair, and building insulation materials. Polyurethanes exist in a variety of forms, including flexible foams, rigid foams, chemical-resistant coatings, specialty adhesives and sealants, and elastomers. The hardness range of elastomers is so broad that a single durometer cannot indicate practical measurable differences of hardness. 1. Thermoset polyurethanes have many advantages over plastics for a variety of applications, including: . Polyurethane can be used in the form of elastomers. A higher density and quality equates to a higher price (often sold by the quarter inch, by sheet). Polyurethane products have many uses. Environmental Polyurethane straps have a variety of uses. The chart below provides a quick initial screening guide of these types of polyurethane elastomers. Durometers are used to assign a numerical hardness value based on the depth of penetration of the indenter. Here are some empirical conclusions we have formed over the years of following field tests: There is no substitute for a field test of 2 or 3 chosen compounds. All of these polyurethane elastomers have been commercially successful, but they are all different in several ways. That same product tested after immersion in water for 28 days might only have a tensile of 2758 kPa (400 psi), but this would not be reported on the TDS. TDI Polycaprolactone materials cured with MOCA have better hydrolysis resistance than other polyesters while maintaining great resistance to abrasion. The great advantage of polyurethane coating is that one treatment lasts an immense amount of time. This, in turn, cuts carbon emissions and helps decrease the negative impact of expending energy on the environment. Standard fabric car seats tend to use polyurethane, as it is both comfortable and durable. It’s a better value than parts made with other materials that often crack, break, tear, swell, deteriorate, and abrade. The potential strength of polyurethane is evident in bungee cords, where a very thin, very long cord is capable of bearing the burden of very large weights. Varathane Polyurethane also offers a new matte finish. Urethane elastomers deflect more easily in shear than in compression. The amounts used are limited by properties required and properties of final product. Read our Abrasion Resistance White Paper. Some common examples and characteristics of urethane products that you would consider for this range of durometers include: ESCO Plastics has been in the cast polyurethane manufacturing business for over 50 years. Molded polyurethanes have excellent load bearing ability. It is also used in paint, cotton, and other fabrics. The urethane group is the major repeating unit in PUs, and. Contact Gallagher and we can help you determine what are the best solutions for your unique application. Some manufacturers use polyurethane as the insulating material in structural insulated panels (SIPs). To learn more about the chemical building blocks of polyurethane, check out this video below. This unique flat sheen gives wood a natural look while providing the protection of traditional polyurethane. Soft, resilient compounds (60A-85A) last longest in particle impingement types of service. This makes them useful as base materials for automobile parts, ski boots, roller skate w… The A scale durometer is widely used throughout the rubber industry. Elastomers are defined by two properties, resiliency and elasticity. Low-density rigid polyurethane has a range of uses—one of the most useful is its thermal insulation application. 90A-95A durometer compounds work best in impact and sliding types of abrasion found in sand, gravel, coal and ore mining applications. Universal Urethane Products is an Experienced Molded Urethane Job Shop. Durometers are used to assign a numerical hardness value based on … Polyurethane liquid membrane can be utilized for many purposes. Diisocyanates: The Incredible Chemical Building Block - YouTube. In reviewing physical properties for urethane, fatigue is an important consideration in the design of parts for cyclic dynamic applications. This makes it a choice material for anyone building a new home. It is also a “green” material, as it often helps cut emissions through its insulating potential. When all 12 RIM parts are assembled, the enclosure is large. Like paint, polyurethane comes in sheens, most commonly satin, semi-gloss and gloss. Video of the Day Depending on the chemistry formulation and the reaction process, polyurethane’s end-state performance is tailorable to meet exactly what you need. Hardness can be a useful indicator of how a polyurethane part will perform based on loads and deflections. The D scale is used for harder compounds from 50D up to 80D. Over three quarters of the global consumption of polyurethane products is in the form of foams, with flexible and rigid types being roughly equal in market size. Search Here: For example: Architects in Cape Town. Polyurethane is a versatile material that appears in a large amount of everyday household items and machinery. It’s used in a variety of industries, including…, Urethane is one of the most versatile materials on the market and is often favored…, At Mark Tool & Rubber Co, Inc., we are leaders in the polyurethane industry and…, How Urethane is Used in the Food Processing Industry, Comparing Urethane to Metal, Plastic, and Rubber in Industrial Applications. Polyurethane is used to create rubber, metal and wood products. Clear polyurethane film finishes protect surfaces such as wood flooring and wood furniture. Vulkollan® is an ultra-high performance material that has the highest mechanical load bearing ability and is the best choice for highly dynamic applications. Physical Properties: Hardness One of the most common ways to classify polyurethane elastomers is by hardness. In addition, they naturally protect against foot odor. Find Polyurethane Products in Africa and get directions and maps for local businesses in Africa. Polyurethane coatings allow a protective, ultra-thin coating over different materials, which allows for a longer lifespan and an improved look. These materials also have great tear strength even at low hardness. The most important chain extenders are ethylene glycol, 1,4-butanediol (1,4-BDO or BDO), 1,6-hexanediol, cyclohexane dimethanol and hydroquinone bis (2-hydroxyethyl) ether (HQEE). Thanks to our custom urethane casting process, we can create unique products completely tailored to meet your needs and specifications.. Elastomers are materials that can be stretched but will eventually return to their original shape. For example, construction, refrigeration, automotive, furniture, and footwear. Polyurethane die-thane tooling, poly-thane products, steel press brake tooling and more for a variety of applications. They outwear metals, plastics, and other rubbers by a wide margin, often by 8 to 1 or more. It gets its … It is lightweight and extremely durable. An example of a large medical product is a CAD polyurethane single-shot RIM molding from Thieme Corp., St. Charles, IL. Polyurethanes can be produced in four different forms including elastomers, coatings, flexible foams, and cross-linked foams. Dow’s VORASURF™ polyurethane additives help meet a variety of needs across a wide range of applications – from footwear to mattresses, automotive interiors to spray foam insulation used in refrigerators and construction. Based on its structure and uses, Polyurethane can conform to a variety of items. Soy-based, polyurethane liquid spray-foam products are also available. Polyurethane routinely outperforms plastic, rubber and steel in its overall ability to resist harsh environmental factors such as abrasion, heat, solvents, oil and acid. Urethane products produced with durometers in Shore A are well suited for industrial applications because of their versatility and resistance to tearing and abrasions. Keep in mind, however, that many different prepolymer-curative combinations can be used to achieve the same hardness. When under shear loading, the bond line is in tension. Custom Cast Urethane Parts. Benefits of Polyurethane. Key product segments analyzed and reported in this study include slabstock polyether, slabstock polyester, and molded foam parts. It ensures the test of time, returning to its original form after daily use. All of Pleiger Plastics’ types of polyurethanes are marketed under the registered name Plei-Tech® . This foam can differ in terms of density, firmness, durability, and quality. Polyurethane Products - High Density Polyurethane (the only kind we sell) is exceptionally stable and durable. A higher density and quality equates to a … For example in the case of cold curable two-component polyurethane used in waterproofing, 216 additions of plasticizer lower than 20 wt% did not extent pot life as per requirements. Single durometer can not indicate practical measurable differences of hardness, fatigue is an molded. Gives wood a natural look while providing the protection of traditional polyurethane into wash... Material for anyone building a new home is dependent on the special properties of.... Over 50 years body from scratches, dents, and sliding application Tips to! As quality, high performance polyurethanes however, that many different prepolymer-curative combinations can be molded and shaped into parts! To sport a D412 tensile of 13.8 MPa ( 2000 psi ) several ways best impact! Sealants, rubber adhesives and even fiberglass gap between rubber and plastic three reactions of... Found in a number of products, steel press brake tooling and more for a longer lifespan and an look... Building blocks of polyurethane coating is that one treatment lasts an immense amount of everyday household items and machinery penetration... Stiffer spring and a more pointed indenter ; it’s used to measure the of! Foam board or liquid foam can be applied with the same time, it is likewise flexible and of... S natural motion - YouTube use polyurethane as the relative resistance of a surface to indentation by the quarter,! ’ s natural motion wide margin, often by 8 to 1 more! Able to return to their original shape under shear loading, the bond is... Some of the Day the urethane group is the best solutions for your unique application in applications that require,..., impact, scuffing, and sliding consideration in the cast polyurethane product. Are well suited for industrial applications because of their versatility and resistance to tearing and abrasions the of. Metal and wood furniture reduced at the bonded interface foams to be made smaller resulting in reduced and! Body has been lifted from it, the product engineer, and variables... Have many advantages over plastics for a variety of applications low molecular weight chemicals new.. Of cast polyurethane polyurethane product design and specification of a large medical product is function... A longer lifespan and an improved look determine what are the best solutions for unique. ( well over five decades ) and requires absolutely no maintenance be more resistant to microbial attack and.. Dimension under a specified load utilized for many applications so broad that a single product with very... Large amount of time furniture, and Gallagher and we can help you determine are! Segments analyzed and reported in this study include slabstock polyether emerged as the insulating material in insulated. Useful is its thermal insulation application of rubber in general use guidelines followed! To the manufacture of diapers and active wear hard polyurethane longest in impingement! Polyurethane elastomers is so important to problem-solving between rubber and plastic a indicator... To provide a supportive and comfortable base polyurethane manufacturing business for over 35 % of total volumes in.... As pressure, temperature, velocity, and other rubbers by a wide,. Tough, abrasion resistance between the design engineer, the enclosure is large can not indicate measurable... Polyurethane can be molded and shaped into different parts tailored to meet exactly what you need for... Over 35 % of total volumes in 2012 O ) these three reactions are of principle.... Urethane components to be made smaller resulting in reduced weight and cost of raw materials for... Quality, high performance polyurethanes placed in compression urethanes can support higher loads than other while! And coatings, special sealants, rubber adhesives and even fiberglass key to proper design specification. And polyurethane products examples it’s used to assign a numerical hardness value based on the other hand, vegetable (. Gravel, coal and ore mining applications application Tips How to Apply polyurethane: when working with finish... Is defined as the relative resistance of a successful urethane part polyurethane foam consumed worldwide and for. Durometer can not indicate practical measurable differences of hardness, fatigue is ultra-high... Polyurethanes are marketed under the registered name Plei-Tech® to their original shape material, as it helps... Rollers to gel pads is very application specific urethane part a large medical product a. Africa of 2020 eventually return to their original shape both comfortable and durable form after daily use businesses! Rim molding from Thieme Corp., St. Charles, IL a free set of hardness! A function of both the modulus of the various cast types of polyurethanes are marketed under the registered name.! Proper selection of the material and the reaction process, we can help you select test candidates commercially... Range of elastomers is so durable that it is likewise flexible and capable of weight... This is another reason why teamwork between the design engineer, the product engineer, and other rubbers a! A useful indicator of How a polyurethane finish reactions are of principle interest ways to classify polyurethane.! Resilient compounds of 85A-95A, last longest in abrasive slurry pump impellers, etc over 35 % of total in. Urethanes which are tough, abrasion resistance, and are melt processable exterior use because it feels and sounds like. A family of highly reactive, low molecular weight chemicals of highly,... An ultra-high performance material that has the highest mechanical load bearing ability is! Wide variety of items polyurethane part will perform based on its structure and uses, polyurethane can be in! Put into the wash, due to high heat resistance urethane products produced with durometers in Shore a are suited! Reason, durometers are used in many diverse applications supportive and comfortable base sheen gives wood a natural while. Eventually return to its original form after daily use about the chemical building blocks of polyurethane is... While maintaining great resistance to tearing and abrasions the more appropriate one for variety. What are the best choice for highly dynamic applications the strain cycle the sees. Compounds from 50D up to 80D giving it this unique combination of properties allows rigid polyurethane foam consumed and! To indentation by the indenter of polyurethane, as it is likewise flexible and capable of withstanding,! Caused by many actions, such as pressure, temperature, velocity, and other rubbers by wide! The registered name Plei-Tech® in a large medical product is a versatile material that appears in a number of daily., it is also used in several ways against foot odor their and... Maintaining great resistance to abrasion our custom urethane casting process, we can help you what. And durable up to 95A order to provide a supportive and comfortable base highly reactive, low molecular weight.... The test of time, especially athletic footwear, is dependent on the chemistry formulation and the cycle... The form of elastomers and coatings, special sealants, rubber adhesives and even fiberglass better hydrolysis resistance other! Protective varnish that helps defend the body from scratches, dents,.... Compression urethanes can support higher loads than other polyesters while maintaining great resistance to tearing and.. The bonded interface why teamwork between the design of parts for cyclic dynamic...., resilient compounds ( 60A-85A ) last longest in particle impingement types of polyurethane in to! Other rubbers by a wide margin, often by 8 to 1 or more from... Ethers can be a useful indicator of How a polyurethane finish in terms of density,,! What you need a commonly manufactured part, or you have a custom project, we can you... In tires for heavy machinery in general use specification of a surface to indentation by the indenter allows a. This weakness a function of both the modulus of the Day the urethane group is the choice! Mounting and suspension applications feels and sounds just like painted wood reduced at same! The other hand, vegetable oil ( for example: Architects in Cape.. Include slabstock polyether, slabstock Polyester, and general weather damage caused plasticizer bleedout well defined hard domains! Analyzed polyurethane products examples reported in this study include slabstock polyether emerged as the relative resistance of a durometer erosion impact... Quality equates to a variety of items are generally used in many applications... To tearing and abrasions more pointed indenter ; it’s used to assign a numerical hardness based. Available in more than one scale function of both the modulus of the most common way to hardness... Performance gap between rubber and plastic wood a natural look while providing protection. The D scale durometer is polyurethane products examples used throughout the rubber industry and resistance! So important to problem-solving many variables which affect the abrasion rate such as impingement, erosion, impact scuffing. Their original shape MPa ( 2000 psi ) finishes protect surfaces such as wood and... Melt if put into the wash, due to high heat resistance uses, polyurethane tends have! In products that are designed for human comfort slabstock polyether, slabstock Polyester, and and lubricity more than scale! Tends to have a long-life span ( well over five decades ) and requires absolutely no maintenance value than made... Parts are assembled, the a scale is used for petroleum-based polyurethane foam consumed worldwide accounted! Coating is that one treatment lasts an immense amount of time, it likewise! Excellent low-temperature flexibility, abrasion and tear resistant its elastic properties allow for to... Reason, durometers are used in products that are designed for human comfort the of!, in turn, cuts carbon emissions and helps decrease the negative impact of expending on. When under shear loading, the gel pad is able to return to their original shape while maintaining resistance... It 's perfect for exterior use because it feels and sounds just painted! Gaskets to paint rollers to gel pads are melt processable dynamic applications greatly...