... .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, chemical proof, water proof, good insulation, acid ... high efficiency.5. Small order quantity is welcomed. IIR rubber washer