Founded in 1996, China Xiqiang Pumps Co., Ltd. is professional oil seal manufacturer and wholesaler for the household, industrial and agricultural industries. With 80% components home made, quality is better controlled here. GS, CE, UL, EMC & EMF certificates guarantee received products to be high quality for customers. We have become the long-term custom oil seals supplier of world-class retailers such as B&Q, BAUHAUS, OBI, METRO, etc.

G38 REAR OIL SEAL
Product Dimensions: 4 x 0.9 x 0.3 inches ; 1.6 ounces
Shipping Weight: 1.6 ounces
Radial Oil Seals consist of a single lip bonded to a metal support with a garter spring.
There are many different variations of the Radial Oil Seal, both with and without an integral dust excluding lip. These dust lips can be positioned either within the seal width or beyond the seal base.
A successful Radial Oil Seal runs with a thin film of fluid under the sealing lip. The film acts as a lubricant and allows a meniscus to form on the other side of the sealing lip. Radial Oil Seals can also include hydrodynamic aids, which create positive sealing by returning any oil leaking back into the system.
For pressures above the recommended 0.05 MPa (7.3 psi) a metallic support heel can be used.
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 rotating inside a housing or bore. Because of friction, there must be some clearance between the shaft and the bore. The function of the oil seal is to stop whatever fluid is inside from leaking out the clearance between the shaft and housing. The seal may also be used to prevent outside materials, such as dirt, from moving in through the clearance.

1b. PTO OIL SEAL 9N,2N,8N
44-D9NN703BB
PTO Oil Seal for all Ford Tractors with 1 1/8" and 1 3/8" PTO From 1939 thru 1964, 2000, and 3000 Ford Tractors with 4, 6, 7, and 8 Speed Transmissions, 3550 and 4000 from 1965 thru 1975, 2600, 3600, 4100, and 4600 from 1975 thru 1981, and 2610, 3610, 4110, and 4610 from 1981 on. O.D. 2.45", I.D. 1 5/8", and W 5/8".
"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 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.
"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.

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