568-251 URETHANE 70 DURO ORINGS

The U70251 is an AS568-251 clear Polyurethane (AU/EU) 70 Shore A O-Ring built to an inside diameter of 5.109 in (129.77 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.387 in (136.83 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Polyurethane (AU/EU) is known for outstanding extrusion resistance at elevated pressure, very high tensile strength and load capacity. This material stands up to abrasion and wear, extrusion under high pressure, and impact and shock loading. The material carries a published service range of -65°F (-53.9°C) to 200°F (93.3°C). It should not be specified for service in prolonged humidity at elevated temperature or acids and bases.

Maintenance and OEM teams specify it across press and forming equipment, construction machinery, and hydraulic cylinders.

Reference part number U70251 when ordering; the item is sold individually. Nominal inside diameter is listed as 5 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.