568-438 URETHANE 90 ORINGS -PREM GRADE

Ordered as U90438, this is an AS568-438 clear Polyurethane (AU/EU) 90 Shore A O-Ring supplied with an inside diameter of 6.225 in (158.12 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.775 in (172.09 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to abrasion and wear, extrusion under high pressure, and petroleum oils. That behavior comes from the compound itself: Polyurethane (AU/EU) is widely chosen for outstanding extrusion resistance at elevated pressure and exceptional abrasion resistance. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C).

You will find this material specified across off-highway equipment, press and forming equipment, and mining and heavy equipment.

Reference part number U90438 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.