The outer edge of the oil seal is metal. Compared with the inner frame oil seal, the TB oil seal has the characteristics of good rigidity, easy installation, safe use, accurate positioning, high coaxiality, good heat conduction and heat dissipation, and saving materials. The TB oil seal is a centerless grinding of the skeleton of the oil seal to improve the co-rotation of the outer wheel and the inner wheel after the oil seal is matched, thereby improving the dynamic sealing accuracy of the skeleton oil seal and better preventing the leakage of oil stains. In recent years, TB oil seals have developed rapidly, especially in places with severe service conditions or high precision.
