Dynaline (378) 00151 Metric O-Ring Assortment, 419 Pieces / 32 Sizes

419 Pc. DIN Metric 70 Durometer Nitrile O-Ring Assortment 00151. 32 sizes of 70 durometer metric buna nitrile o-rings in a sturdy plastic box with thickness gauge. Dimensions: 9-3/4" (l) x 6-1/2" (w) x 1-3/4" (h). Buna-N Rubber is also referred to as Nitrile Rubber. Nitrile rubber is a copolymer of butadiene and acrylonitrile. In addition to its excellent elastomeric properties, it is resistant to oil, caustics, and aliphatic hydrocarbons. Nitrile is not suitable for solvents and chlorinated hydrocarbons. Its maximum temperature limit is 212º F. Viton is a brand of synthetic rubber and fluoropolymer elastomer commonly used in O-rings and other molded or extruded goods.Viton fluoroelastomers are categorized under the ASTM D1418 and ISO 1629 designation of FKM. This class of elastomers is a family comprising copolymers of hexafluoropropylene (HFP) and vinylidene fluoride (VDF or VF2), terpolymers of tetrafluoroethylene (TFE), vinylidene fluoride (VDF) and hexafluoropropylene (HFP) as well as perfluoromethylvinylether (PMVE) containing specialties. The fluorine content of the most common Viton grades varies between 66 and 70% O-Ring Kit.