High-Quality Rubber Silicone Oring Seals for Industrial Use. Custom Material Options: Available in NBR, CR, SBR, EPDM, IIR, HNBR, ACM, NR, EP, SIL, FKM etc. Custom Color and Design: Colors include transparent, black, and others as per your requirements. Free Design and Samples: Free design service and free samples available (buyer pays mold/post). OEM/ODM Services: Highly welcomed with experienced engineers and well-organized workshops. ISO Certified Quality: ISO9001:2008, RoHS, FDA certified with strict quality control system. Wide Application Range: Suitable for Automotive, Industrial, Medical, Agricultural, and Solar energy. Fast Delivery Time: Sample 3-7 days; Mass production 7-45 days depending on quantity. High Temperature Resistance: Features high/low temperature, oil, fuel, water, weathering, and ozone resistance.