... materials:NR/CR/NBR/FKM/VITON/FPM/SIR/EPDM/ACM/PA/PU/PE/PTFE/POM/PVC/ABS/PS etc.. Materials: NBR ... , FKM/FPM/VITON,SIL,ACM,EPDM,H-NBR,NR,PA,PU,PE,PTFE,POM,PVC,ABS,PS etc.Applications: automobile ... / customers' design and specification are accepted. Nylon seal ring,PTFE flat washer,PA flat washer