... 3. Hardness: 30~90 shore A Advantages: Material NBR, NR, EPDM, FKM, SBR, Silicone, Neoprene or Customized Size According to the ... perfusionMaterial:We use various kinds of polymers like NBR, NR, EPDM, FKM, SBR, Silicone, and Neoprene etc. Custom material is available ... slip anti wearable round rubber feet for chair Natural silicone synthetic rubber products manufacturer factory