568-250 URETHANE 70 DURO ORINGS

Part number U70250 is an AS568-250 clear Polyurethane (AU/EU) 70 Shore A O-Ring built to an inside diameter of 4.984 in (126.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.262 in (133.65 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists ozone, abrasion and wear, and petroleum oils. That behavior comes from the compound itself: Polyurethane (AU/EU) delivers 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). It is not the right choice where hot water and steam or ketones are present.

It sees regular use in high-pressure fluid power, hydraulic cylinders, and press and forming equipment.

Order part number U70250, sold individually. Nominal inside diameter is listed as 5 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.