Analysis of Causes of Rubber Oil Seal Damage

Number of hits：2202024-12-07 15:45:24　

　　Rubber oil seals are mainly used to prevent the leakage of lubricating oil and the intrusion of external pollutants. In actual use, the oil seals have lost their function even though they have not been used for a long time. Why is this? What factors cause the failure of rubber oil seals?

　　1. Excessive pressure is one of the main factors that cause damage to rubber oil seals. When the pressure on the oil seal exceeds its design limit, the rubber material may be over-deformed, resulting in cracks or ruptures, which will affect its sealing effect.

　　2. Chemical erosion should not be ignored either. In some environments, specific chemicals will corrode rubber, causing the material to gradually age or swell, resulting in weakened elasticity and sealing performance.

　　3. Mechanical friction is also often one of the causes of oil seal damage. When the equipment is running, the oil seal may encounter friction, vibration or external impact, all of which may cause damage to the rubber.

　　4. Aging of rubber materials is a common problem. After long-term use, especially under the long-term action of high temperature, sunlight or oxygen, the elasticity of the rubber material will decrease, thus affecting its sealing effect.

　　5. Improper installation is also a common reason. If too much force is applied during installation or the position is incorrect, the oil seal will be damaged and eventually fail.

　　6. Rapid changes in ambient temperature will also affect the performance of rubber oil seals. Rubber materials have different properties at high and low temperatures. Extreme temperature changes may make them brittle or lose density, thus affecting the sealing function.

　　Wear problems are inevitable in all mechanical equipment. As the oil seal continues to contact with other components, the material is gradually worn, which will reduce its sealing performance.

　　From the above content, we can conclude that whether the oil seal can be used for a long time is related to many factors. In addition to those unavoidable factors, we can choose rubber oil seals of suitable materials according to the application environment, which can greatly improve the application life.