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RUBASIA RUBBERTECH’s union end rubber flexible joint, also called a rubber expansion joint or union rubber bellow, is a flexible rubber connector with threaded metal union ends for easy installation into pipe systems. Its primary function is to absorb vibration, shock, and noise, compensate for small misalignments between pipes or equipment, and relieve stress on pipelines and anchors, protecting the system from damage and ensuring reliability.  

How they work

• Flexible Design: Made of high-temperature-vulcanized rubber layers with cord fabric reinforcement, these units can absorb movement in various directions. 
• Threaded Union Ends: The metal union ends allow for quick and secure attachment to standard pipe fittings or equipment, providing a leak-proof connection. 
• Vibration Isolation: The flexible nature of the rubber structure effectively isolates and dampens vibrations generated by connected machinery, such as pumps, fans, and compressors. 
• Movement Compensation: They are designed to accommodate axial, angular, and eccentric movements, preventing stress build-up and potential failure in the piping. 
   

Common Applications

• Vibration Absorption: Used in systems connected to pumps, chillers, blowers, and air condition fans to reduce noise and vibration. 
• Misalignment: Compensates for small pipe and equipment misalignments during installation or due to operational movements. 
• Stress Relief: Protects piping and equipment by absorbing stresses from thermal expansion, vessel movement, and anchoring systems. 
• Quick Installation: The union ends simplify and speed up installation and removal, making them ideal for smaller diameter pipes and equipment connections.