Features 【PACKAGING】There are 240 * Rings in a large number, 12 different specifications, convenient for replacing old or broken ones in time, to meet your needs of different sizes. 【APPLICABLE】These oil seal washers can be used under extreme conditions, with a maximum pressure of 40 MPa and a maximum working range of - 25 ℃ to 100 ℃. 【APPLICATION】O-ring is widely used in pipeline connection, screw plug and pressure system of mechanical equipment to prevent leakage of water, oil, fuel, etc. 【VISUALIZATION】It is easy to identify. The O-ring oil seal washer is installed in an organized and labeled transparent storage box, which can simplify the selection of correct size. 【MATERIAL】High quality nitrile rubber is embedded. The sealing effect of O-ring is better. It can withstand heat, oil, gas, water and other media and is durable. Specification: Material: Metal and NBR Weight: 745g / 26.28oz Working pressure: -25 - +100℃ Working temperature: 40MPa / 5800psi (Max) Working medium: Oil Inside diameter: 6\8\10\12\14\16\18\20\22\24\27\30mm / 0.24\0.31\0.39\0.47\0.55\0.63\0.71\0.79\0.87\0.94\1.06\1.18in Package list: 240 * Ring(1 box, 12*20) Note: The actual product color may deviate from the photo due to light. Package List