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| Allied Metrics Seals & Fasteners, Inc. | Sparta, NJ | |
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.jpg) | Polyurethane (AU, EU) The millable Polyurethane rubbers are distinguished by two types; one is polyester urethane (AU), the other is polyether urethane (EU). AU type urethanes have outstanding oil, fuel and solvent resistance but can be attacked by hydrolysis, EU type urethanes are not attacked by hydrolysis and still offer a fuel and oil resistance comparable to low ACN ( 18~22% ACN) nitriles or HNBRs. Any type polyurethane all have excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. We also can offer any type thermoplastic urethane (TPU). Service Temperature The Service Temperature of PU is -40 C to 80 C, shortened lifetime up to 100 C. Hardness 60 to 93 Shore A are available. Color Black, transparent, green, orange are available, or any assigned Color from customers. Application Polyurethanes are usually are applied in mechanical industries, especially in places that require higher wear resistance and higher strength. In some environments, moisture condensing on the surface of rubber seal will cause hydrolysis of AU, so choosing EU is better. But EU doesn’t resist well to oil, the lubricant must use higher aniline point oil.  | ||||||||
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