What are urethane o-rings used for?

Polyurethane o-rings are typically used for their excellent wear and abrasion resistance. As a thermoplastic elastomer, polyurethane o-rings can be formulated in many different ways although typical polyurethane o-ring material are designed for sealing impact strength and drive belt applications.

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Easily order Polyurethane o-rings online by selecting your desired compound below.

Common Names:

Urethane, AU, EU, PU

Trade Names:

Adiprene®, Millathane®, Vibrathane®

General Description:

Polyurethane is an organic polymer. Polyurethanes are formed by reacting a polyol (an alcohol with more than two reactive hydroxyl groups per molecule) with a diisocyanate or a polymeric isocyanate in the presence of suitable catalysts and additives. Polyurethane is a widely used compound due to its superior strength, tear and abrasion resistance.  Polyurethane also provides excellent permeation resistance.

Features:

• Good hydraulic oil and gasoline resistance
• Resistant to pure aliphatic hydrocarbons (propane, butane, fuel)
• Resistance to mineral and silicone oils and greases
• Resistant to water, oxygen, ozone and aging
• Excellent tear and abrasion resistance
• Available in multiple types and compounds to meet performance and cost requirements
  

Limitations:

• Not compatible with acids, ketones, esters, ethers, alcohols, glycols
• Hot water, steam, alkalis and amines 
  

Service Temperature:

-65° to 225° F (-54° to 107° C).  Depending on compound and application

Urethane O-Ring (Polyurethane &#; PU, AU, EU) Material Description

For more Polyurethane O Ringinformation, please contact us. We will provide professional answers.

The millable Polyurethane (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. Global O-Ring and Seal 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.

Cure System: Peroxide-Cured

Standard polyurethane compounds are peroxide-cured.

Urethane O-Ring Temperature Range:

Standard Low Temp: -40°C (-40°F)
Standard High Temp: 80°C (176°F)

SPEC SHEET: Urethane 70 Durometer

SPEC SHEET: Urethane 90 Durometer

SHOP FOR URETHANE O-RINGS

For more information, please visit Rubber Grommet.