The skeleton oil seal of rubber sealing ring manufacturer is a typical representative of oil seal. Generally speaking, oil seal refers to skeleton oil seal. Generally, the function of oil seal is to isolate the parts that need lubrication from the output parts in the transmission parts, so as not to let the lubricating oil leak.

The skeleton, like the steel bar in the concrete member, plays a reinforcing role and enables the oil seal to maintain its shape and tension. According to the structure, it can be divided into single-lip skeleton oil seal and double-lip skeleton oil seal. The auxiliary lip of the double-lip oil seal plays a dustproof role, preventing external dust and impurities from entering the machine.

According to the type of skeleton, it can be divided into internal skeleton oil seal, exposed skeleton oil seal and assembled oil seal. According to the working conditions, it can be divided into rotary skeleton oil seal and reciprocating skeleton oil seal. Used for gasoline engine crankshaft, diesel engine crankshaft, gearbox, differential, shock absorber, engine, axle and other parts.

The skeleton oil seal structure introduced by rubber sealing ring manufacturer consists of three parts: oil seal body, reinforcing skeleton and self-tightening coil spring. According to different parts, the sealing body is divided into bottom, oil seal structure of waist frame, cutting edge and sealing lip.

Usually, the inner diameter of the skeleton oil seal in the free state is smaller than the shaft diameter, that is, it has a certain "interference". Therefore, when the oil seal is installed in the oil seal seat and the shaft, the pressure of the oil seal cutting edge and the contraction force of the self-tightening coil spring will exert a certain radial tightening force on the shaft. After a period of operation, the pressure will quickly decrease or even disappear. Therefore, the spring can compensate the self-tightening force of the oil seal at any time.