... EPDM rubber o ring, silicone rubber o ring, ACM rubber o ring, NBR rubber o ring, HNBR rubber o ring, FPM rubber o ring, CR rubber ... , mechanical, or special purpose. 7. Certifications: ISO9001:2008, TS16949, and meet RoHS directive. 8. QA/QC: have strict quality control ... and assurance system, and have the individual testing room. 9. Document: full ...