568-174 URETHANE 90 ORINGS -PREM GRADE

U90174 is an AS568-174 clear Polyurethane (AU/EU) 90 Shore A O-Ring supplied with an inside diameter of 8.737 in (221.92 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 8.943 in (227.15 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 extrusion under high pressure, impact and shock loading, and abrasion and wear. Polyurethane (AU/EU) is known for toughness that outperforms conventional rubber compounds and exceptional abrasion resistance. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C). It is not the right choice where ketones or acids and bases are present.

Maintenance and OEM teams specify it across construction machinery, off-highway equipment, and mining and heavy equipment.

Reference part number U90174 when ordering; the item is sold individually. Nominal inside diameter is listed as 8 3/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.