Polyurethane O-Rings

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urethane o-rings

Benefits of Polyurethane

Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. Urethane has many benefits that plastic does not! With plastics, the higher the durometer, the more likely a part is to crack and break under impact and shock loading. Not so with urethane. Urethane is not brittle like plastic. It’s a true elastomer capable of tremendous impact resistance even at very high durometers. More importantly, polyurethane retains it elasticity and strength over the complete range of hardness. Even at high durometers, urethane can be stretched to substantial elongations and will still return to its original dimensions.

Urethane Applications

If you’re looking for superior abrasion, cut, and tear resistance, look to urethane. Urethane boasts higher load-bearing capacity, better compression set, and superior tolerance to greases, oils, oxygen, and ozone. Man-made urethane can be easily formulated to outlast rubber and stand up to sunlight and outdoor environments.

Colors Available 

Most cast urethanes are available in grades that range from clear, to opaque, to amber. That means they can be mixed with a variety of dyes and pigments making it easy to color code parts. In fact, urethane rollers and belts used in print machinery are often color coded to simplify maintenance and ensure proper replacement.

With even the hardest urethanes, you can achieve a significantly better impact resistance than plastics and composites.

Rocket Seals is a leading seal and O-Ring specialist, supplying seals for all industrial applications. For over 60 years, we have served the growing and changing needs of industry.

At Rocket Seals, our commitment to the highest standard of customer service includes support to assist you in selecting the material that will meet your application requirements.

Contact Rocket Seals today to see how we can solve your sealing challenges.

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