... -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 ... make them, such as PEEK,PTFE, POM, PVC, PPS, PP, PE, PE-UHMW, ABS, MC NYLON, OILON,the ... customers request. 4.The performances of the PEEK valve seat as following:1)Mechanical performance: Creep resistance is ...