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
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 3.85 inch (97.79 mm)
Actual Outside Diameter 4.4 inch (111.76 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium