Seal, Seal Strip, O Ring, PU Ring, PU Strip, PU Piston, Buffering Pad, Y Shape Seal, Irregular Seal, Rotary ... in all kinds of industry.such as chemical industry,petroleumindustry,medical technique,food industry,sewage-disposal industry,steel industry,semi-conductindustry ... long service life.Material:Viton , EPDM,NBR,FFKM,VMQ,PTFE,PU and so on (according to your requirements )Operation conditions: ...