U70420 is an AS568-420 clear Polyurethane (AU/EU) 70 Shore A O-Ring with an inside diameter of 3.85 in (97.79 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.4 in (111.76 mm). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Expect good resistance to impact and shock loading, abrasion and wear, and ozone. Polyurethane (AU/EU) is specified for outstanding extrusion resistance at elevated pressure and exceptional abrasion resistance. The material carries a published service range of -65°F (-53.9°C) to 200°F (93.3°C).
It sees regular use in construction machinery, off-highway equipment, and high-pressure fluid power.
Order part number U70420, sold individually. Nominal inside diameter is listed as 3 7/8 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.
description 568-420 URETHANE 70 DURO ORINGS
uf_description2 3.850" (97.79MM) ID X .275" (6.99MM)
Actual_CS 0.275 inch (6.99 mm)
Actual_ID 3.85 inch (97.79 mm)
Actual_OD 4.4 inch (111.76 mm)
ProductCode Description O-Rings - Bulk - Premium