O-Rings & O-Seals from VikTech Fittings are precision-engineered elastomeric seals designed to provide reliable leak-proof sealing in static and dynamic applications. Available in NBR, EPDM, Silicone, Viton®, Neoprene, and PTFE-encapsulated grades. Manufactured as per AS568 / ISO3601 standards for compatibility with oils, fuels, gases, steam, and aggressive chemicals. Standards: AS 568 (USA Standard) ISO 3601 DIN 3771 BS 4518 Types Available: Standard O-Rings (Metric & Inch Sizes) O-Seals for Flanges & Valves Quad Rings (X-Rings) Back-Up Rings Large Diameter O-Rings (Vulcanized/Jointed) FDA Grade O-Rings (Food & Pharma Use) Size Range: ID: 3 mm to 1000 mm Cross Section: 1 mm to 20 mm Pressure Rating: Vacuum to 700 bar (depending on material & application) Material Options / Grades: Nitrile Rubber (NBR) EPDM Rubber Neoprene (CR) Silicone Rubber (VMQ) Viton® / FKM PTFE Encapsulated O-Rings Fluorosilicone (FVMQ) Hydrogenated Nitrile (HNBR) Applications: Valves, Pumps & Compressors Hydraulic & Pneumatic Systems Oil & Gas Equipment Pharmaceutical & Food Processing Water Treatment Plants Automotive & Aerospace Industry