568-344 URETHANE 90 ORINGS -PREM GRADE

This o-ring is supplied in AS568-344 clear Polyurethane (AU/EU) 90 Shore A with an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm), catalogued under part number U90344. It creates a positive seal at flange, piston and rod interfaces without added hardware.

Polyurethane (AU/EU) offers exceptional abrasion resistance and long wear life in dynamic reciprocating service. Expect good resistance to ozone, impact and shock loading, and extrusion under high pressure. Published continuous service range is -65°F (-53.9°C) to 200°F (93.3°C). It is not the right choice where acids and bases or hot water and steam are present.

Maintenance and OEM teams specify it across hydraulic cylinders, high-pressure fluid power, and off-highway equipment.

Stocked as U90344 and sold individually. Nominal inside diameter is listed as 3 7/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.