Oil seals commonly known as retaining oil ring, is the car to keep rotating parts essential non-metallic parts. Commonly used skeleton oil seal generally consists of metal skeleton ring, wire coil and rubber seal layer part.
The role of oil seal:
1. To prevent sediment, dust, moisture and other intrusion into the bearing;
2. Limit the leakage of lubricating oil in the bearing.
Oil seal is a kind of sealing ring, is used in the rotating, sliding parts of the environment, mainly to play on both sides of the environment, Oil Seals to prevent oil and oil leakage and dust into the water.
Oil seal material is usually oil-resistant rubber, used in the rotating parts, generally lined with iron (ring) fixed type, in the sealing diameter of the coil to increase the sealing effect, Oil Seals its general shape similar to the home pressure cooker ring;
Simple understanding of the oil seal is to play the role of oil seal, not to mechanical hydraulic transmission system leakage of a class of mechanical components. So this type of mechanical components sealed oil seal oil, hydraulic oil and other properties are very good. Seals are used to seal seals and dynamic seals (reciprocating machines).
Oil commonly used materials are: nitrile rubber, fluorine rubber, silicone rubber, acrylic rubber, polyurethane, polytetrafluoroethylene and so on. When selecting the oil seal material, the compatibility of the material with respect to the working medium, the adaptability to the operating temperature range, Oil Seals and the ability of the lip to rotate at high speed for the rotary axis must be taken into account. General oil seal work when the lip temperature is higher than the working medium temperature 20 ~ 50 ℃, in the choice of oil seal material should be noted. For details, please refer to: Rubber types and characteristics. The working range of the oil seal is related to the material used for the oil seal: the material is -40 to 120 ° C for the NBR, 4100 ° C to 180 ° C, and 50 ° C to 300 ° C.
The most representative of the oil seal is called lips oil seal, rubber material is the most common, Oil Seals play a completely covered with self-tight spring seal oil effect, the industry commonly known as such oil seal for the Tc skeleton oil seal。