Industrial Hydraulic O-Ring Durable EPDM Silicone Rubber Acid Alkali Waterproof. Customized Material Options: Available in NBR, CR, SBR, EPDM, IIR, HNBR, ACM, NR, EP, SIL, FKM, and more. Customized Color and Design: Colors include transparent, black, or any other color as per your requirements. Customized Hardness: Hardness ranges from 30 to 90 Shore A based on specific needs. ISO Certified Quality: Certified with ISO9001:2008, RoHS, and FDA standards for strict quality control. Free Design and Samples: Free design service and samples available; buyer pays mold and post charges. OEM and ODM Services: Over 10 years of experience in OEM and ODM molded rubber parts. High Temperature Resistance: Resistant to high/low temperatures, oil, fuel, water, weathering, and ozone. Fast Delivery Time: Sample delivery in 3-7 days; mass production in 7-45 days depending on quantity.