O RING PU
(PU) rubbers are distinguished into two types; the first is polyester urethane (AU) and 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 to 22% ACN) Nitriles or HNBRs.
Any type polyurethane has excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. seals worlds offers urethane o-rings in 70 and 90 durometer. We can also offer any type thermoplastic urethane (TPU).
Urethane o-rings are typically transparent (clear) in color, and have an unlimited shelf life.
Tempreture: -40C up to 80C
Preferred Environments to Use PU O-Rings
Performs Well In: | Doesn’t Perform Well In: |
| -Ozone -Water up to 50?C EU type -Mineral oil and grease -Silicone oil and grease -Aliphatic hydrocarbons | -Alcohols -Glycols -Ethers -Ketones -Hot water and steam -Alkalis, amines -Acids -Esters |
Note that : If you want a raw material that suits your application , just contact us
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