4-1/2" ID X 5-1/8" OD X 5/16" HT

APG stocks the L31204500, a Polyurethane (AU/EU) Standard Profile Loaded Lip Seal measuring a 4-1/2 in inside diameter, a 5-1/8 in outside diameter, and a height of 5/16 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 (standard) Urethane.

Polyurethane (AU/EU) is specified here for toughness that outperforms conventional rubber compounds, very high tensile strength and load capacity. This material stands up to ozone, extrusion under high pressure, and petroleum oils. It is not the right choice where hot water and steam or ketones are present.

You will find this material specified across press and forming equipment, hydraulic cylinders, and off-highway equipment.

This item is sold individually under part number L31204500. Unit weight is approximately 29.893 g. 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.