U70389 is an AS568-389 clear Polyurethane (AU/EU) 70 Shore A O-Ring built to an inside diameter of 19.953 in (506.81 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 20.373 in (517.47 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Expect good resistance to ozone, extrusion under high pressure, and petroleum oils. Polyurethane (AU/EU) is specified for exceptional abrasion resistance, very high tensile strength and load capacity. Service temperature is rated from -65°F (-53.9°C) through 200°F (93.3°C).
It sees regular use in high-pressure fluid power, hydraulic cylinders, and off-highway equipment.
Order part number U70389, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description 568-389 URETHANE 70 DURO ORINGS
uf_description2 19.952" (506.78MM) ID X .210" (5.33MM
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 19.953 inch (506.81 mm)
Actual_OD 20.373 inch (517.47 mm)
ProductCode Description O-Rings - Bulk - Premium