O-Ring: Specification and StandardsISO 3601-3 and MILSTD-413CDimensionQuality Acceptance CriteriaTechnical ReferenceDescription: O-Ring is the simplest circular shape sealing system. Feature of O-Rings: FR provides almost of commercial o-ring, aerospace o-ring, military specification o-ring, automotive o-ring, A / C o-ring and customer sized o-ring. Material: NR, NBR, HNBR, EPDM, Silicone, and VITONApplication: O-Ring are used for both static and rotational sealing applications. Good for hydraulic actuator seals, Transmission seals, oil and water pump seals. Quality Grade: Normal and Special grade for higher level of quality with respect to automotive, hydraulic & pneumatics, valve body, rotary vane vacuum pumps electronic, medical and watch case applications. Standard: JIS, AS-568, ASTM, DIN, SAE and Specifics for Automotive, high Precision for medical and watch case and heavy duty machine specifications.