NBR Seal 1.Firm and Durable 2.fire resistance 3. Resist weather,ozone,old NBR SealOur company QINGHE JINNUO SILICONE CO., LTD is one of the largest companies in Northeast China produce SiliconeRubber Seal for railcars, automobile, steamboat, industrial electrical equipment, building door & window, construction machinery, construction bridge and tunnel. Etc.Material NBRColorBlack/white/red/blue/ ...