O Ring Kit, 950 Pcs Rubber O-Ring Assortment Kit, 20 Sizes Washer Gasket Set ...
[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℉.