568-423 URETHANE 90 ORINGS -PREM GRADE

The U90423 is an AS568-423 clear Polyurethane (AU/EU) 90 Shore A O-Ring with an inside diameter of 4.225 in (107.32 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.775 in (121.29 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Polyurethane (AU/EU) is specified here for exceptional abrasion resistance and long wear life in dynamic reciprocating service. The compound resists petroleum oils, impact and shock loading, and abrasion and wear. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C).

Common environments for this compound include hydraulic cylinders, mining and heavy equipment, and press and forming equipment.

U90423 ships individually. Nominal inside diameter is listed as 4 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.