568-458 URETHANE 90 ORINGS -PREM GRADE

U90458 is an AS568-458 clear Polyurethane (AU/EU) 90 Shore A O-Ring measuring an inside diameter of 14.475 in (367.67 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 15.025 in (381.64 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Polyurethane (AU/EU) is widely chosen for long wear life in dynamic reciprocating service and toughness that outperforms conventional rubber compounds. This material stands up to petroleum oils, abrasion and wear, and ozone. The material carries a published service range of -65°F (-53.9°C) to 200°F (93.3°C). Verify compatibility before use with prolonged humidity at elevated temperature or hot water and steam.

Maintenance and OEM teams specify it across mining and heavy equipment, high-pressure fluid power, and hydraulic cylinders.

This item is sold individually under part number U90458. Nominal inside diameter is listed as 14 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to 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.