568-424 URETHANE 90 ORINGS -PREM GRADE

U90424 is an AS568-424 clear Polyurethane (AU/EU) 90 Shore A O-Ring built to an inside diameter of 4.35 in (110.49 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.9 in (124.46 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to extrusion under high pressure, abrasion and wear, and petroleum oils. That behavior comes from the compound itself: Polyurethane (AU/EU) offers very high tensile strength and load capacity, exceptional abrasion resistance. Continuous operating temperature is published at -65°F (-53.9°C) to 200°F (93.3°C). Verify compatibility before use with hot water and steam or acids and bases.

It sees regular use in high-pressure fluid power, off-highway equipment, and construction machinery.

Reference part number U90424 when ordering; the item is sold individually. Nominal inside diameter is listed as 4 3/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.