... . 3.Good competitive price. 4.Aging resistant Details about IIR rubber washer: Materials Comply with ROHS, IIR, or Silicone (VMQ), ... Viton, EPM, NBR, etc.Temperature -50~100°CCharacteristics UV proof, ozone proof, animal or vegetable oil ... proof, high Tensile strength, heat resistant, weather resistant, etc.Hardness 20 to 90 shore A or as your request.Tolerance Strictly upon ...