[Application] : Used for faucets, plumbing, pipes, pressure washer, hose nozzles, sinks, filters, hydraulic oil, auto engines, machinery bearings, pumps, boats, oil, gas control valve, spray, air condition, kitchen, bathroom, water fitting seal leak repair etc. [Package] : 950 pcs O ring assortment, contains 20 sizes inner diameter (3/64" ~ 63/64") and thinkness (5/64" ~ 3/32"). [Convenient] : Different sizes with detailed label o-ring storing in 24 separate compartments box , organize and retrieval easily. [Material] : Made of nitrile rubber (NBR,Buna-N), good elasticity and sealing, deformation resistant,wear resistant, corrosion resistant,ozone resistant, high and low temperature resistant. working temperature range from -40?/-40? to 120?/248?. [Support] : 45 days money back, replacement/refund services if quality issues. Product Description