568-371 URETHANE 90 ORINGS -PREM GRADE

U90371 is an AS568-371 clear Polyurethane (AU/EU) 90 Shore A O-Ring built to an inside diameter of 8.475 in (215.27 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.895 in (225.93 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to abrasion and wear, ozone, and impact and shock loading. That behavior comes from the compound itself: Polyurethane (AU/EU) offers toughness that outperforms conventional rubber compounds and exceptional abrasion resistance. Service temperature is rated from -65°F (-53.9°C) through 200°F (93.3°C). It is not the right choice where acids and bases or prolonged humidity at elevated temperature are present.

Maintenance and OEM teams specify it across high-pressure fluid power, press and forming equipment, and off-highway equipment.

This item is sold individually under part number U90371. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.