elastomer piping expansion joint is hand-crafted and designed to absorb motion and displacement between pipe flanges. These handcrafted, one-piece elastomeric expansion joints feature an exclusive H-R double protected construction. Used and proven in tough services since 1979, Kosga hand-crafted expansion joint incorporate the finest materials in combination with painstaking fabrication techniques.
Hand-Crafted Expansion Joint is our most rugged expansion joint. They are all hand built by our skilled craftsmen. The 1/4” minimum thickness solid elastomer tube is continuous with the flange face. Multiple plies of rubber impregnated high strength polyester or nylon tire cord form the first pressure reinforcement over the tube. Arch swell in response to pressure and arch migration are virtually eliminated by criss-crossed layers of reinforcement that pass over the arch and around steel or ductile iron rings embedded on both sides at the base of the arch. Body swell is controlled by high strength fabric or spiral steel wire. Large diameter joints are often built with steel rings in place of the wire when in addition to internal pressure, external pressure resistance is important. External pressure may come from deep burial, shallow embankment under roadways or joints inside tanks.
Main Advantages： 1.Absorbs motion and displacement between pipe flanges perfect for high shock and vibration situations 2.Increased efficiency of piping systems by managing high range of temperatures and pressures 3.Prevents pipe buckling or fracture 4.Features steel body rings held in place with exclusive ring enveloper system 5.Manages a high range of temperatures and pressures 6.Available for all general applications including severe and harsh environments 7.Engineered and built to specific customer requirements 8.Can be designed for full vacuum service 9.Available sizes: 1/2 to 108