FUNCTION: 245pcs metric metal self-centred seal gasket washer combination box, is suitable for cars, ships, engines, oil pipelines, gas control, faucet seal repair with silicone seal washers INTERNAL SIZE: Assorted sealing washers set internal diameter: M6 (6 mm / 0.24 " ), M8 (8 mm / 0.35 " ), M10 (10 mm / 0.39 " ), M12 (12 mm / 0.47 " ), M14 (14 mm / 0.55 " ), M16 (16 mm / 0.63 " ), M18 (18 mm / 0.71 " ), M20 (20 mm / 0.79 " ), M22 (22 mm / 0.87 " ), M24 (24 mm / 0.94" ), M27 (27 mm / 1.06 " ), M30 (30 mm / 1.18 " ) OUTER SIZE: Assorted sealing gasket set outer diameter: M6 (9 mm / 0.35 "), M8 (13 mm / 0.51 "), M10 (15 mm / 0.59 "), M12 (17 mm / 0.67 "), M14 (19 mm / 0.75 "), M16 (21 mm / 0.83 "), M18 (24 mm / 0.94 "), M20 (27 mm / 1.06 "), M22 (29 mm / 1.14 "), M24 (31 mm / 1.22 "), M27 (35 mm / 1.38 "), M30 (37 mm / 1.46 " ) SPECIFICATION: Bonded seal washer has: M6 (25pcs ), M8 (25pcs ), M10 (25pcs ), M12 (25pcs ), M14 (25pcs ), M16 (20pcs ), M18 (20pcs ), M20 (20pcs ), M22 (20pcs ), M24 (15pcs ), M27 (15pcs ), M30 (10pcs ), a total of 245pcs MATERIAL: NBR O-ring is made of metal gasket and rubber, with oil as medium, for sealing threaded pipe joints and plugs; The working pressure is 400KA/CM (39.2MPA), and the working temperature is between -25°C and 100°C; A washer is a part that is placed between the connecting piece and the nut; Generally carbon steel is a flat metal ring, used to protect the surface of the connected sealing lip (rubber ) from nut abrasion, to disperse the pressure of the nut on the connected part HIGH QUALITY: High pressure tubing half pack assembly gasket complete specifications, not easy to rust, oil resistance, wear resistance, pressure resistance, wate proof long service life PURPOSE: Used for: oil pipeline system as a medium, used for welding, mechanical devices, to prevent oil, fuel, water, medicine leakage. Rubber O-rings are color cod by size, eliminating the hassle of matching sizes AFTER SALE: If there is a quality question, please feel free to contact us, I will do my best to solve your problem as soon as possible, until you are satisfied FUNCTION:245 PCS metric zinc-plated steel self-centred rubber seal washer combination box, is suitable for cars, ships, engines, oil pipelines, gas control, faucet seal repair with silicone seal washers