568-387 URETHANE 70 DURO ORINGS

APG stocks the U70387, an AS568-387 clear Polyurethane (AU/EU) 70 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). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists ozone, petroleum oils, and abrasion and wear. That behavior comes from the compound itself: Polyurethane (AU/EU) is specified for exceptional abrasion resistance and long wear life in dynamic reciprocating service. Continuous operating temperature is published at -65°F (-53.9°C) to 200°F (93.3°C). Exposure to hot water and steam or ketones will shorten service life.

Common environments for this compound include high-pressure fluid power, mining and heavy equipment, and off-highway equipment.

Stocked as U70387 and sold individually. Nominal inside diameter is listed as 18 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.