... Step Seal, Mechanical Seal, Extrusion Seals, Rotating Seals and wearable 1.Maunly uses in the oil seal, each king of mechanical ... materials and hardness for your option, including Buna-N (NBR), HNBR, VITON, Silicone, FluoroSilicone, EPDM, Teflon, Natural Rubber, BUTYL, SBR, ... of products and high grade service; and welcome companies for cooperation and joint development and encourage you to contact ...