*568-158 URETHANE 90 ORINGS -PR GRADE

U90158 is an AS568-158 clear Polyurethane (AU/EU) 90 Shore A O-Ring supplied with an inside diameter of 4.737 in (120.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.943 in (125.55 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Polyurethane (AU/EU) delivers outstanding extrusion resistance at elevated pressure and toughness that outperforms conventional rubber compounds. Expect good resistance to extrusion under high pressure, impact and shock loading, and petroleum oils. Service temperature is rated from -65°F (-53.9°C) through 200°F (93.3°C).

Maintenance and OEM teams specify it across mining and heavy equipment, press and forming equipment, and hydraulic cylinders.

U90158 ships individually. Nominal inside diameter is listed as 4 3/4 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.