568-387 URETHANE 90 ORINGS -PREM GRADE

U90387 is an AS568-387 clear Polyurethane (AU/EU) 90 Shore A O-Ring measuring an inside diameter of 17.955 in (456.06 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 18.375 in (466.73 mm). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

Polyurethane (AU/EU) is specified here for very high tensile strength and load capacity, exceptional abrasion resistance. It resists abrasion and wear, extrusion under high pressure, and impact and shock loading. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C). Exposure to hot water and steam or prolonged humidity at elevated temperature will shorten service life.

You will find this material specified across press and forming equipment, mining and heavy equipment, and hydraulic cylinders.

U90387 ships individually. Nominal inside diameter is listed as 18 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.