1. LSB produce the o-ring,x-ring.rubber parts.oil seal ,seal. 2. Material: FFKM,NBR, ... HNBR,EPDM,SI,FKM(VITON)CR,PTFE. FFKM rubber can work in the high temperature .it has the ... (dynamic)3. Pneumatic system (dynamic)4. Oil or grease media sealing 5. Water media sealingHardness range 50-90Temp. range ... resistance excellentAcid resistance goodSpecial resistanceFood grade ffkm rubber oil seal