568-257 URETHANE 70 DURO ORINGS

The U70257 is an AS568-257 clear Polyurethane (AU/EU) 70 Shore A O-Ring measuring an inside diameter of 5.859 in (148.82 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.137 in (155.88 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Polyurethane (AU/EU) is widely chosen for very high tensile strength and load capacity, outstanding extrusion resistance at elevated pressure. Expect good resistance to ozone, impact and shock loading, and abrasion and wear. The material carries a published service range of -65°F (-53.9°C) to 200°F (93.3°C).

You will find this material specified across high-pressure fluid power, mining and heavy equipment, and press and forming equipment.

This item is sold individually under part number U70257. Nominal inside diameter is listed as 5 7/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.