1.Master and identify the basic knowledge of counterfeit and inferior products,and choose high-quality and standard oil seals.

2.During installation,if the outer surface of the shaft diameter is low in roughness or has defects such as rust spots,rust,burrs,etc.,it should be smoothed with a fine emery cloth or oil stone;clean oil or grease should be applied to the oil seal lip or the corresponding position of the shaft diameter.Coat the outer ring of the oil seal with sealant,and wrap the keyway on the shaft with hard paper to avoid scratching the oil seal lip.Use a special tool to rotate the oil seal inward,and do not hit hard to prevent the oil seal from deforming.Or squeeze the spring to fail;if the lip flanges,the spring falls off and the oil seal is skewed,it must be removed and reinstalled.It should be noted that when the shaft diameter is not worn and the oil seal spring has sufficient elasticity,do not tighten the inner spring without authorization.

3.The oil seals used in machinery generally have bad working conditions,large environmental temperature differences,a lot of dust,frequent machine vibrations and frequent changes in the force of the machine parts,they must be checked,maintained and maintained frequently.

4.If the shaft diameter and bearing wear is serious;the oil seal rubber is aging or the spring fails,etc.,repair and replace the corresponding parts in time.

5.Troubleshoot abnormal heating components or assemblies in time;avoid mechanical overspeed and overload operation to prevent the oil seal lip temperature from rising,rubber aging,early lip wear,etc.

6.Always check the oil level of the engine oil.If there are too many impurities in the engine oil,if there are alloy powders and metal iron filings,the engine oil must be completely replaced.The brand and quality of the oil to be changed must meet the requirements of the season.