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Check the oil seal dust, impurities and sediment; take a look at the oil seal rubber of the presence or absence of cracks.

Whether it meets the requirements of the second check oil seal Specification (inner and outer diameter and height) with the size of the hole and shaft seat; look at the width of the adequacy of insufficient width to cut carpet cushion or pad of paper filled.

Oil seal inside the spring of the three examinations flexibility, tightness suitability, such as the spring is too long, too loose, the gripping force should be appropriate to shorten the length; take a look at the oil seal rubber is aging.

Four examinations shaft seat or seat hole scratches, corrosion or other mechanical damage; look at the oil seal deformation.

Oil seal should be installed from around the same time uniform force forward, non-unilateral force percussion. When installed skeleton rubber oil seals, oil seals, coil side toward to the direction of the oil, the oil seals using temperature does not allow more than 95 ° C. And high-speed shaft with the oil seal, should be used in high-speed or high-speed dual-port modifications type oil seal.