... 2OEM manufacturer 3More than 10 years producing experience Air Flue Compensator(FVB)1:characteristicsDue to the ... light weight,it needs no pipe bearing sound high temperature resistance and corrosion resistance,for the rubber ... deformation=<25%=<25%Hardness58±3°58±3°Hot air aging70°C×72h70°C×72hVarious rate of ... ,has abundant experience on rubber products High Quality Air Flue Compensator(FVB)