... have kinds of material : NBR,HNBR,EPDM,SILICONE,VITON,NR,FLS,FFPM,PU,PTFE etc. 2)High temperature and acid-alkali ... :Customized/standard and nonstandard Material:NBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFE Temperature Common: 20~50°C; NBR(-40~120 ...