*568-338 URETHANE 90 ORINGS -PR GRADE

Ordered as U90338, this is an AS568-338 clear Polyurethane (AU/EU) 90 Shore A O-Ring measuring an inside diameter of 3.1 in (78.74 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.52 in (89.41 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists extrusion under high pressure, abrasion and wear, and ozone. That behavior comes from the compound itself: Polyurethane (AU/EU) is valued for exceptional abrasion resistance and long wear life in dynamic reciprocating service. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C). Applications involving ketones or acids and bases call for a different compound.

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

U90338 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.