silicone seal,water seal,mechanical seal 1.It has good quality which can meet your need. 2.standard and customized sizes avail silicone seal,water seal,mechanical seal 1.We can supply some new products depend on your sperial request and can deliver the product to you in prescriptive time.2.Rubber materials:We use standard rubber materials like EPDM, EPDM/PP, NBR, NBR/PVC, TPV/TPO, CR, IIP, NR, UR ...