3-5/8" ID X 4-1/4" OD X 1/2" HT

Ordered as L31203625500B, this is a Polyurethane (AU/EU) Type B Loaded Lip Seal with a 3-5/8 in inside diameter, a 4-1/4 in outside diameter, and a height of 1/2 in. The loaded lip seal uses a flexible sealing lip energized by system pressure to hold a tight seal on a moving rod or piston. This item is further identified as Loaded Lip Seal (type B) Urethane.

Polyurethane (AU/EU) is specified here for long wear life in dynamic reciprocating service and outstanding extrusion resistance at elevated pressure. The material holds up against petroleum oils, extrusion under high pressure, and abrasion and wear. It is not the right choice where ketones or prolonged humidity at elevated temperature are present.

Maintenance and OEM teams specify it across construction machinery, hydraulic cylinders, and press and forming equipment.

Stocked as L31203625500B and sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.