Because of the cassette design, so cassette wheel axle seal is providing good protection for wheel shaft in order to avoid spending more expense on it in comparison with general design. Also the lifespan of oil seal is extended much longer.
1. Material: NBR, viton, C/R, ACM, silicone, etc. 2. Dimension: please browse our website or contact us directly for getting more information. 3. Others: we could make the products according to customer’s special requirement in different materials, because there is a molding dept in our factory.