568-345 URETHANE 70 DURO ORINGS

The U70345 is an AS568-345 clear Polyurethane (AU/EU) 70 Shore A O-Ring measuring an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Expect good resistance to impact and shock loading, abrasion and wear, and extrusion under high pressure. That behavior comes from the compound itself: Polyurethane (AU/EU) is valued for very high tensile strength and load capacity, outstanding extrusion resistance at elevated pressure. Rated temperature range runs from -65°F (-53.9°C) to 200°F (93.3°C) in continuous service. It is not the right choice where acids and bases or ketones are present.

Maintenance and OEM teams specify it across construction machinery, press and forming equipment, and mining and heavy equipment.

Stocked as U70345 and sold individually. Nominal inside diameter is listed as 4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.