Hydraulic Oil Seal Ring NBR FKM FPM EPDM Rubber O-Ring Food Grade Silicone O Ring Seal Black Nitrile Rubber O Rings. Wide Material Selection: Available in NBR, FKM, EPDM, Silicone, HNBR, FFKM and more for diverse applications. Custom Shape Options: Supports non-standard and custom shapes to meet specific engineering requirements. Global Standard Compliance: Meets AS-568, JIS-B2401, DIN-3771, BS-1516, ISO3601 and ASTM D2000 standards. Certified Quality Assurance: ISO9001, ISO14001, TS16949 certified with ROHS and REACH approved compounds. Large Scale Production: Monthly capacity exceeds 2500 tons of rubber materials with 165 employees. Fast Delivery Service: 1-2 days for stock items; 5-10 days for custom orders depending on quantity. Versatile Application Scope: Suitable for hydraulic, pneumatic, automotive, food, chemical and industrial machinery.