The rubber sphere of single rubber bellows expansion joint is composed of inner rubber layer, outer rubber layer and frame layer. And each layer plays different function, only combined the three layers together can give excellent performance to single rubber sphere expansion joint.
all kinds of rubber sphere expansion joint
Inner rubber layer of single rubber sphere expansion joint
The commonly used inner layer rubber material of single rubber sphere expansion joint are neoprene rubber, butyl rubber and natural rubber. Neoprene rubber is resistance to abrasion, oil and aging; butyl rubber has better gas tightness, resistant to ozone and inorganic strong acid; natural rubber is the most widely used rubber material, it resistant to alkali, high elasticity and high gas tightness. Since inner rubber layer of single rubber bellows expansion joint always been extended to flange end face, it requires the inner rubber layer must be able to resistant to water flow and leakage.
Outer rubber layer of single rubber sphere expansion joint
The commonly used outer layer rubber material of single rubber bellows expansion joint are neoprene rubber and butyl rubber. Neoprene rubber has excellent physical mechanical performance, resistant to all kinds of chemical agents, and has higher tensile strength, elongation. Because single rubber bellows expansion joint’s outer rubber sphere layer is exposed in the air, it will be easily damaged by external objects, which requires performance of heat resistance, acid and alkali resistance, oil resistance and ozone resistance.
Frame layer of single rubber sphere expansion joint
The frame layer is between inner rubber layer and outer layer, providing high strength to the single rubber sphere expansion joint, always produced by natural rubber with cord fabric, also steel wire rope. The frame layer give rubber bellows expansion joint strong capacity of thermal expansion, pressure resistance, vacuum resistance and water hammer impact resistance.
With almost 30 years’ manufacturing experience on rubber sphere expansion joint, Henan Lanphan pursue higher quality and better service all the time. Please directly message us at [email protected] ! Or contact us through online customer service right on the webpage.