Oil seals – often called kit seal, fluid or dirt seals – close spaces between stationary and moving components in mechanical equipment, helping prevent lubricant escape. They also stop harmful contaminants from entering machinery, particularly in severe environments. Vital components of practically every type of machine and vehicle in operation, oil seals protect all types of precision-constructed, close-fitting ball, sleeve and roller bearings.

In precision bearings, oil seals help prevent lubricants from escaping the bearings or a specific area. In machine components, oil seals help prevent abrasives, corrosive moisture and other harmful contaminants from entering machinery. They also help stop intermixture of two different mediums, such as lubricating oil and water.

• Oil and grease seals supplied by Timken feature precision sealing designs that are matched to many original equipment or aftermarket applications

• The seals help ensure consistent and reliable performance

Oil seal details

Oil seal low price iron rubber oil seal national oil seal.
A component of machine that seals lubricants, an oil seal is constructed of rubber, garter spring, and an internal case. While preventing the leakage of lubricants, water, or chemicals, an oil seal also prevents the entry of dust and dirt into a machine

2-In precision bearings, oil seals help prevent lubricants from escaping the bearings or a specific area. In machine components, oil seals help prevent abrasives, corrosive moisture and other harmful contaminants from entering machinery. They also help stop intermixture of two different mediums, such as lubricating oil and water.

Usage

In a typical application, the oil seal is installed adjacent to a bearing, sealing in or sealing out, as necessary, the various liquid or solids encountered by the particular mechanism.

Design Attributes

1-Oil and grease seals supplied by Timken feature precision sealing designs that are matched to many original equipment or aftermarket applications.

2-The seals help ensure consistent and reliable performance.

Applications

The seals are used in a full range of equipment in thousands of applications, such as
Automotive; Manufacturing
Off-highway; Oil refineries
Power transmission

Materials or compounds

Oil and grease seals are available in the following compounds: felt, leather, urethane, nitrile, polyacrylate, ethylene-acrylic or polyacrylic (Vamac®), silicone, fluoro-elastomer, tetrafluoro-ethylene propylene (Aflas®) and PTFE.

Metric O-rings function primarily as gaskets that seal connections between structures like pipes and tubes or within pistons and cylinders. They're typically made of pliable materials like rubber or high-quality plastics. When pressed between two mating surfaces, they effectively block .

Whether a plastic or rubber seal, metric o-rings come in two main forms: static or dynamic. A static seal is where the ring remains stationary and is used simply for containing pressure or maintaining a vacuum. Dynamic seals can be either reciprocating (for use in pistons and cylinders) or rotating (for applications in which a shaft rotates inside a housing).

In the o-ring size diagram above, the measurement "b" (which is the width of the groove) must be larger than the deformed o-ring itself. Depending on application, the groove may be open on one side. However, the pressure applied to the medium to be sealed must have full access to the o-ring. The surfaces of the groove and the opposing surfaces should have (more or less) rounded processing traces to permit peak-to-valley heights of 44 to 25 μm.

Static Seal Groove Dimensions

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