FKM 75 O-Ring Heat Rasistent Silicon Square O Ring Cord. Wide Material Selection: Available in NBR, FKM, EPDM, HNBR, SIL, ACM, CR, FVMQ for diverse applications. Custom Color Options: Standard colors include black, white, brown, red, green, blue, yellow; custom colors available. Flexible Hardness Range: Customizable hardness from 10 to 90 Shore A to meet specific performance needs. OEM and ODM Services: Full customization support including drawings, materials, and specific product requirements. International Certifications: Certified with IATF 16949:2016, ISO 9001:2015, SGS, RoHS, REACH, and FDA. 20 Years Manufacturing Experience: Over two decades of expertise in rubber seals for automotive, medical, and sanitary industries. Global Standard Compliance: Quality defined by ASTM D2000 with tolerances per ISO3302 and ISO2768.