... king of engine's seal. Our products:O-Ring, Oil Seal, Gasket, U-Ring, Quad-Ring, Glyd-Ring, Step Seal, Mechanical Seal, Extrusion Seals, Rotating ... (PAI, PI, PEEK, PPS, PTFE, POM, NYLON) Products, HDE, PVC, PP, Metal Parts and so on. Its seal products are widely used ...