【Safe & Durable】: Outer diameter: 11.8mm (15/32 inches); Inner diameter: 8.24mm (5/16 inches); Width: 1.78mm (1/16 inches). Hardness: 70 Shore A; Package includes: 120pcs nitrile rubber O-rings. Meets standards defined by Aerospace Standard AS568A.

【Wide Application】: Nitrile rubber O-rings prevent leaks in fuel or water lines, machinery, hydraulic, and pneumatic connections. Suitable for DIY seal repair of faucets, high-pressure washers, trucks, cars, motorcycles, ships, engines, oil and water pumps, solenoid valves, instruments, sensors, mechanical bearings, and other accessories.

【Easy Install】: NBR gaskets have a smooth, burr-free surface, are soft and flexible, easy to use and install, and significantly increase bearing area, preventing loosening or pressure diffusion. Suitable for sealing water, oil, and gas.

【Meet Your Needs】: The O-ring is made of nitrile rubber (NBR/Buna-N), is waterproof, oil-resistant, and wear-resistant, with a wide operating temperature range (-20 to 80℃ / -4 to 176°F), and is durable. Its standard arc design ensures even stress distribution, excellent elasticity, and superior sealing performance, effectively preventing leakage and loosening.

【Use Tips】: Please confirm the required size and material before purchasing, and place it in the correct position.