Active Member
|
[China]
Address: Daxin District, Jimo, Qingdao, China
Contact name:Eric
Qingdao Bright Rubber & Plastic Co.,Ltd |
|
|
High Quality NBR FKM Rubber Framework Oil Seal Rubber Oil Seal 45*75*8
Oil seal structure and functions
Oil seals are available in diverse shapes to in shape the machines and materials to be sealed. Figure 2 indicates the shape and the names of the diverse additives of the maximum usual oil seal. The capabilities of the diverse additives also are indicated in Table 1.
No. | Name | Functions |
|---|---|---|
| ① | Main lip | The main lip is the most critical component of the seal. Its sealing edge comes in full contact with the shaft surface in order to provide excellent sealing performance. (See Figure 3.) |
| ② | Minor lip | The minor lip prevents the entry of dust and contaminants from
outside. Lubricant can be retained in the space between the main lip and the minor lip. |
| ③ | Sealing edge | This refers to the component of the oil seal that makes contact
with the shaft. It is wedge-shaped to be pressed against the shaft surface and makes contact with the shaft to ensure sufficient sealing performance and suitability for operation at high peripheral speed. |
| ④ | Spring | The spring supplements the tightening force (i.e., the lip radial load) to ensure enhanced sealing performance and tight contact between the shaft and the sealing edge.The spring also prevents the deterioration of main lip sealing performance caused by high heat or other such factors. |
| ⑤ | Metal case | The metal case provides rigidity to the seal, helping it settle on the housing securely. It also ensures easy seal handling and mounting. |
| ⑥ | O.D. (outside diameter) surface | The O.D. surface affixes the oil seal to the housing and prevents leakage , through the fitting area, of substances to be sealed, while excluding contaminants. |
| ⑦ | Fluid side face | The front-end face of the seal is called the nose. The nose is made of rubber and forms a gasket seal when compressed on the housing shoulder. |
| ⑧ | Air side face | The oil seal surface vertical to the center line of the shaft on the side that does not come in contact with substances to be sealed is called the back face. |
Common seal types and their features
Seals are categorised through O.D. wall material, lip type, and whether or not they have got a spring or not. Major oil seals are laid out in ISO 6194-1 and JIS B 2402-1.
Introduction of Qingdao Bright Rubber & Plastic Co.,Ltd.
We have been in the line of manufacturing various kinds of Rubber parts for more than 19 years. Our products are including: Rubber Oil Seals, Valve Stem Oil Seals, Rubber Hose, Rubber Shock Absorber, Molded rubber parts and etc.
OEM and ODM are available. Welcome you send inquiry to us.
