*568-211 URETHANE 90 ORINGS - PREM GRADE

U90211 is an AS568-211 clear Polyurethane (AU/EU) 90 Shore A O-Ring supplied with an inside diameter of 0.796 in (20.22 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.074 in (27.28 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists impact and shock loading, petroleum oils, and abrasion and wear. That behavior comes from the compound itself: Polyurethane (AU/EU) is specified for exceptional abrasion resistance and outstanding extrusion resistance at elevated pressure. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C). It is not the right choice where ketones or acids and bases are present.

You will find this material specified across hydraulic cylinders, press and forming equipment, and high-pressure fluid power.

U90211 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.