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

APG stocks the L31204625625B, a Polyurethane (AU/EU) Type B Loaded Lip Seal with a 4-5/8 in inside diameter, a 5-1/4 in outside diameter, and a height of 5/8 in. A loaded lip seal uses a flexible sealing lip energized by system pressure to hold a tight seal on a moving rod or piston. The catalog record notes: Loaded Lip Seal (type B) Urethane.

Polyurethane (AU/EU) is specified here for exceptional abrasion resistance and outstanding extrusion resistance at elevated pressure. This material stands up to extrusion under high pressure, petroleum oils, and ozone. Exposure to prolonged humidity at elevated temperature or ketones will shorten service life.

Maintenance and OEM teams specify it across mining and heavy equipment, hydraulic cylinders, and off-highway equipment.

Order part number L31204625625B, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.