This product is of internal and external layer glue, cirles tubular rubber parts, the vulcanization molding metal flange with again after or parallel connectors loose combination to set. It used the rubber flexibility, high air tightness ,resistance and weather resistance of medium and radioactibe characteristics,such as high strength ,cold and heat stability strong cord fabric with the composite polyester oblique,after a high voltage and high temperature vulcanization and mold into.Can reduce vibration and noice,and can be used for the temperature change because of the heat bilges cold shrink up the compensation, widely applied in all kinds of pipeline. It used the rubber flexibility ,high air tightness, resistance and weather resistance of medium and radioactive characteristics, such as high strength, cold and heat stability strong cord fabric with the composite polyester oblique,after a high voltage and high temperature vulcanization and mold into.Canreduce vibration and noise, and can be used for the temperature change because of the heat bilges cold shrink up the compensation,widely applied in all kinds of pipeline.