Available products: O-ringsWashers, Gaskets, Sheet, Strip, Mouldings, Extrusion, O-ring cords

Polyurethane (AU/EU) polymers exhibit high tensile strength, excellent abrasion and tear strength, making them the toughest of all elastomers. Compression set and heat resistance are inferior to other elastomers such as Nitrile. These materials may be suitable for hydraulic applications that have abrasive contaminants or shock loads. Ether based Urethanes (EU) are suited to lower temperature applications, whilst Ester Urethanes are offer improved abrasion, heat and oil swell resistance. The service temperature for these compounds is -40°C to 100°C.

May be used for Should not be used for
Abrasion resistance
Drive belts
Petroleum fluids
Brake fluids
High temperature
Hot water
Oxygenated solvents
Poor compression set

Polyurethane O-rings are becoming more commonly stocked, however the available sizes are usually inch based O-ring sizes (BS1806/AS568A). Polyurethane is available as O-ring cord, washer, gasket, sheet and strip products.