The service life of rubber oil seal In addition to the sealing material (NBR, PTFE, FKM, PU, VMQ) In addition, do you know what factors are involved? The key factor affecting the life of rubber oil seal is the increase of the operating temperature of the lip, which is caused by the conflict between the oil seal and the shaft. The increase of the lip temperature is closely related to the radial force, angular velocity and the conflict index of rubber material.
· Pressure range: 0.3MPa
· Line speed range: low speed less than 4m/ low speed s, high speed 4~15m/s(depending on rubber type)
· Medium range: oil, water, less corrosive liquid
· Ambient temperature: -20℃~120℃
First, NBR oil seal: has good heat and wear resistance, resistance to all kinds of grease, grease, oil and gas mixture. The applicable temperature can reach 120℃, but it should be noted that the oil in the phosphate ester hydraulic oil can not be used together.
FKM oil seal: aging resistance, heat resistance, oil resistance, suitable for all grease, fuel oil, gasoline, containing extreme pressure additive oil is not easy to harden, but cold resistance, heat resistance, wear resistance is poor, long-term shrinkage deformation, suitable for -20~250℃, can be used for engine oil seal.
Third, the basic requirements of automobile oil seal are tight, firm, long service life, simple layout, easy maintenance and so on.
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