Features EPDM rubber compensator 1. The joint could primarily reduce the quiver and the noise ofthe piping system; Completely solve the different piping problems asdisplacement of jiont, axial flex and etc. 2. Accordingto different material requirement, product could be made as acid proof, alkali proof, corrosion proof to suit different medium and environment. 3. Thematerial are good sealing, light weighting, easy to fix and maintain, also has long usage life. But please keep far away from sharp metal inorder to avoid breaking of the ball.