About this item 270pcs Rubber O-ring Seal Assortment with 18 Sizes Designed for Most Car Air Conditioning. Multiple size options, metric nitrile rubber o-ring. Made from premium rubber materials (Hydrogenated Nitrile) which is resistant to oil, gas, water, alcohol solvents, high temperature and high pressure. Can be formulated to meet application temperatures ranging from -30F (-34C) to 250 degrees F (121 degrees C). Full of elasticity: elasticity and resilience, good sealing effect, effectively prevent leakage of automotive air conditioning compressor, plumbing, machinery, hydraulic circuit and pneumatic repairs and much more. Easy to organize: equipped with a transparent plastic box, all gaskets are placed in a small separate space, more convenient to carry, collect and store. Widely used: Very suitable for plumbing and automotive maintenance, garages, workshops, automobiles, doors, windows, appliances, bearings, pumps, pulleys, suitable for automobiles, electrical appliances, machinery, industry, construction, household and other fields. Color: green Size: as shown Welcome to meet