*568-221 URETHANE 90 ORINGS -PREM GRADE

This o-ring is supplied in AS568-221 clear Polyurethane (AU/EU) 90 Shore A with an inside diameter of 1.421 in (36.09 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.699 in (43.15 mm), catalogued under part number U90221. It delivers dependable bidirectional sealing in a compact groove envelope.

Polyurethane (AU/EU) is specified here for exceptional abrasion resistance and toughness that outperforms conventional rubber compounds. The material holds up against ozone, extrusion under high pressure, and abrasion and wear. Service temperature is rated from -65°F (-53.9°C) through 200°F (93.3°C). Exposure to prolonged humidity at elevated temperature or hot water and steam will shorten service life.

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

U90221 ships individually. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.