... .material:teflon ,ptfe,rubber,nbr,ect 2.various size and color 3.type or structure:TC, TB, SC,ect 4.certificate:ISO2001 teflon ... flat washer describle:1. Material: teflon,NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc. Can choose on ... ,Nipure teflonreinforced teflonglass fiber,etc.8~200mm≤10.0Mpa200°c teflon flat washer