... offer a wide range of Semi-finished & Finished Plastic Products,such as PEEK valve seat.2.We can according to your 3D drawing to make ... the valve seat for you,and we can use another material to make them, such as ... PEEK,PTFE, POM, PVC, PPS, PP, PE, PE-UHMW, ABS, MC NYLON, OILON,the highest quality materials ...