... EPDM spongeUsageWidely used in anti-flammability,moisture-proof,sealing(sealing strip for door,window,auto,furniture etc) and ... Environmental protection, simple construction, impervious, leakage, and good sealing effect.It also resists to Corrosion,aging,flowing, distortion, ... temperature,apply to use punch oil seals,washer,sealing strip,it has excellent sealing feature,often used in the pharmacy, ...