Standard or Nonstandard:Nonstandard Shape:Flat Gasket Model Number:other Material:Rubber Certification:NONE Origin:Mainland China Material: NBR nitrile rubber Colour: Black Dimensions: inner diameter × outer diameter × thickness ( Please choose the correct size according to your needs ). Features: corrosion resistance, oil resistance, and wear resistance. Scope of application: automobiles, machinery, decoration, electrical appliances, cylinders, bearings, pumps, water pipes, valves, spraying, oil drums, chemical pipelines. Uses: hole seals, oil seals, water seals, dust seals, guide rings, fixed seals, shaft seals.