China Factory Wholesale Price Rubber O-Ring Seal FPM EPDM PTFE Silicon NBR FKM Flat Rubber O Ring Seals Manufacturers. Wide Material Selection: Available in NBR, FKM, EPDM, HNBR, SIL, ACM, CR, FVMQ, and more. Customizable Colors: Standard colors include black, white, brown, red, green, blue, yellow; custom colors available by code. Flexible Hardness Range: Can provide any hardness from 10 to 90 Shore A. OEM and ODM Services: Full customization services including 2D or 3D drawing acceptance. International Certifications: Certified with IATF 16949:2016, ISO 9001:2015, SGS, RoHS, FDA, and REACH. High Elasticity and Durability: Features long service life, insulation, and reliability for sealing and cushioning. Industry-Specific Applications: Suitable for pumps, automotive, medical, electronics, and food industries.