What are the materials of rubber expansion joints and how to choose them

The rubber expansion joint is divided into loose flange type, fixed flange type and threaded type according to the connection method; according to the structure, it can be divided into five kinds: single arch, double arch, reducer, curved sphere and wind pressure coil.
Rubber expansion joint spheres are made of different rubber materials according to different media, including natural rubber, butyl rubber, butyl rubber, nitrile rubber, EPDM rubber, neoprene, silicone rubber, fluorine rubber and so on. They are heat-resistant, acid-resistant, alkali-resistant, corrosion-resistant, wear-resistant, oil-resistant and other functions.
When choosing rubber expansion joint products can look at the elasticity, the greater the elasticity of rubber content, some single-arch rubber expansion joint damping performance is not good, some after a period of time will be out of the first crack, aging is more serious, these are because of the use of poor rubber.
Second, it depends on the production process, a good rubber expansion joint using the elasticity of rubber, high airtightness, media resistance, weather resistance and radiation resistance and other advantages - point, the use of high strength, cold and heat stability of polyester cord fabric twill and the composite, after high pressure, high temperature mold vulcanization. In addition, the rubber expansion joints at both ends of the rubber layer into the steel wire ring, so as to improve the performance of rubber expansion joints and increase the service life.
According to the customer's needs to buy the corresponding material, if there is a special model, the manufacturer will separately provide detailed data on the temperature, length, expansion and deflection angle of the goods.