Viton o Ring Descriptions:1.Applications:automobile, industrial, mechanical, medical, or special purpose.2. Good function on sealing and attenuating shock.3. Materials:Viton,alsoNR,HNBR, NBR, SI, EPDM, ACM,PU, SBR, FPM, BR, IIR, CR, IR,etc, just as your request.4. Certifications: ISO9001:2008,...