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OIL SEALS

Dynamic sealing" is the relationship between the rotating shaft and the seal and is handled by the sealing element. A garter spring may used in the oil seal to increase the radial interference between the oil seal lip and contact point on the shaft.

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In an Oil seal environment, there is shaft that is rotating inside a housing or bore. Because of the friction, there must be some clearance between the shaft & the bore. The function of the rotary seal / oil seal is to stop whatever fluid is inside from leaking out from the clearance. The oil seal may also be used to prevent outside material such as dirt from moving in the through the surface. 

Dynamic sealing" is the relationship between the rotating shaft and the seal and is handled by the sealing element. A garter spring may used in the oil seal to increase the radial interference between the oil seal lip and contact point on the shaft. In order to achieve this interference, the oil seal's ID must be slightly smaller than the diameter of the shaft.

Manufacturers of Oil seals, Rotary Shaft seals, Industrial Oil seals, Hydraulic seals, Rubber Seals, V seals, Bonded Seals

"Static sealing" is the relationship between the housing and the seal. In order to achieve this interference, the oil seal's OD must be slightly larger than the diameter of the housing or bore.

An oil seal normally consists of three basic components: the sealing element, the metal case and the spring. The purpose of the sealing element is to stop the fluid from leaking between the shaft and housing. 

 

The metal case will give rigidity and strength to the seal while it is being held in the bore or recessed groove. The spring will help make the sealing element more effective. All materials must be selected depending on the environment in which the oil seal will function.

Below mentioned are few of the Oil seals profiles based on the O.d design & Lip design of the Rotary shaft seal / oil seals.

 

Oil Seal Types:

Generally, seals with spring loaded lips are used for retaining oil lubricants and non-loaded lips are used for low speed grease retention. Metal O.D seals are more suited for steel & cast iron housings. A press fit metal O.D seal has greater holding strength & alignment. As a general rule, the shaft surface speed of “V” & “K” type seal should be less than 10M/S.

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