Rotary Seal Lip Design and Geometry On GlobalSpec

From Colonial Seal Co.

Apart from the elastomeric lip material and interface between the sealing lip and application shaft, a critical design feature of the seal lip is its geometry. Lip geometry is one of several factors that directly affect the radial load exerted on the shaft. The others include the presence of a garter spring, shaft finish, pressure and installation. This article will focus on the lip design and geometry

Because the inner diameter of a seal is manufactured to be slightly smaller than the shaft diameter, the elastomeric lip will be stretched outward by the shaft during installation. When a garter spring is added to the seal these two forces contribute to increase the load on the shaft.

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Products & Services

O-rings

O-rings are solid-rubber seals that are shaped like a doughnut. When pressed between two mating surfaces, O-rings block the passage of liquids or gases.

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Gaskets and Gasketing

Gaskets are used to prevent fluid or gas leaks by providing a barrier between two mating surfaces.

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V-ring Seals

V-ring seals are all-rubber seals used primarily to exclude dirt and other contaminants. They are stretched over shafts and seal against the side of housing or another machine component.

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Dynamic Seals

Dynamic seals include oil seals, hydraulic and pneumatic seals, exclusion seals, labyrinth seals, bearing isolators, and piston rings. They create a barrier between moving and stationary surfaces in applications such as rotating shafts and pistons rings. This is a general search form; more detailed search forms are available.

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Oil Seals and Grease Seals

Oil seals and grease seals have a flexible lip that rubs against a shaft or housing to prevent the leakage or ingress of fluids and dirt.

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Product Announcements

Metric Oil Seals

Allied Metrics Seals & Fasteners, Inc.

Most of you will already understand these basics of how an oil seal is designed but we wanted to put this tip out for people new to the field. In an oil seal environment there is a shaft that is... (read more)

Metric Oil Seal

Allied Metrics Seals & Fasteners, Inc.

Oil Seals available in any size, profile and material. Metric sizes & Inch sizes.... (read more)

L2M Large Bore Oil Seals

Hi-Tech Seals, Inc.

The L2M Oil Seal, proven performance in demanding rotary applications including but not limited to, Steel Processing, Pulp and Paper, Aggregate/ Rock Crushing, Wind Power, Construction and Mining,... (read more)

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