Combination gasket refers to the seal between common liquid materials. The skeleton oil seal isolates the parts that need lubrication in the transmission part from the output parts so that the lubricant does not leak. The sealing effect, characteristics, structure type, working status and sealing mechanism of the skeleton oil seal can be divided into various forms and different names. The representative form of the skeleton oil seal is a galvanized skeleton, which is a rubber completely covered double-lip skeleton oil seal with a self-tightening spring. Generally speaking, an oil seal often refers to such a galvanized skeleton oil seal. The combination of a pad and a ring is called a combined gasket seal principle: Since there is an oil film controlled by an oil seal edge between the oil seal and the shaft, the oil film has a fluid lubrication property.
Under the effect of the liquid surface tension galvanized skeleton oil seal combination washer, the rigidity of the oil film just forms a crescent surface with the air film contacting end to prevent the leakage of the working medium, thereby achieving the sealing of the rotating shaft. The sealing ability of the oil seal depends on the thickness of the oil film on the sealing surface, the thickness is too large, and the oil seal leaks; if the thickness is too small, dry friction may occur, causing oil seal and shaft wear; there is no oil film between the sealing lip and the shaft, which easily causes heating and wear . Therefore, during installation, some oil must be applied to the sealing ring, and the combination of gaskets ensures that the skeleton oil seal is perpendicular to the axis of the shaft. If it is not vertical, the sealing lip of the oil seal will drain the lubricant from the shaft and can also cause the sealing lip. Excessive wear. In the operation of the combination washer, the lubricant in the housing slightly leaks slightly to achieve a state where an oil film is formed at the sealing surface.

Combination washer ball high pressure isolation