1.materials in NBR,EPDM,SBR,FPM 2.all kinds of types 3.verious colours 4.long work life 5.high quality and reasonable price NOK TC oil seals:1. Material: NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc. 2. types: TC, TB, TA, SC, SB, SA, VC, VB, VA, KC, KB, KA, DC, DB etc.3. Different sizes of Oil Seal,Rubber Oil Seal,Rubber Seal, also can make on your size.4.Optional color for you of the Oil Seal, ...