Description:The anti-sludge oil seal can prevent mud and sand from entering the oil seal, which is frequently seen in the prior art. It includes an oil seal lip, which is characterized in that an annular dust pad is added to the oil seal lip to form a barrier outside the secondary lip, thereby preventing direct contact with the soil and blocking the entry of the soil. In this way, the amount and opportunity of soil entry is greatly reduced, so is the failure rate and maintenance rate, thereby improving the reliability and service life.
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