O Ring, Oil Seal, Hydraulic Seal manufacturer / supplier in China, offering CNC Injection Molding Processing Service Smooth Surface POM Rod PTFE Support Block Plastic Sheets, Custom POM Support Block Pressure Washer Sealing-Gaskets Pump Mechanical Hydraulic Cylinder Seals, Custom 2 5 6 7 8 15 20 30 40 50mm POM Plastic Bead Ball Nylon PTFE Hard Solid Ball Diaphragm Pump High Lubrication Grinding Ball and so on.