Factory OEM ODM FKM NBR EPDM China Rubber O Ring Seal Silicone O-Ring. Extensive Material Selection: Offers NBR, EPDM, FKM, Silicone, Neoprene, PTFE, and over 15 other rubber compounds. Custom Size & Color: Available in AS-568, DIN, Metric, and custom sizes; colors available upon request. Comprehensive Certifications: ISO9001:2008 certified; compounds approved by KTW, WRAS, ACS, ROHS, and REACH. Fast Sample Lead Time: Prototype samples delivered in 7-10 days; mass production in 12-18 days. Flexible Customization: Supports OEM/ODM, full customization, and minor customization from samples or designs. High Monthly Capacity: Production capacity exceeds 1500 tons of rubber materials per month. Strict Quality Control: 100% visual inspection; preproduction samples and third-party inspections accepted. Diverse Packing Options: Customizable packing including air-in, tube, or bulk bags (10/50/100 pcs) on pallets.