568-343 URETHANE 70 DURO ORINGS

APG stocks the U70343, an AS568-343 clear Polyurethane (AU/EU) 70 Shore A O-Ring supplied with an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Polyurethane (AU/EU) is specified for exceptional abrasion resistance, very high tensile strength and load capacity. It resists abrasion and wear, extrusion under high pressure, and ozone. The material carries a published service range of -65°F (-53.9°C) to 200°F (93.3°C). It is not the right choice where hot water and steam or acids and bases are present.

It sees regular use in off-highway equipment, construction machinery, and hydraulic cylinders.

Stocked as U70343 and sold individually. Nominal inside diameter is listed as 3 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.