Reasonable assembly-A set of rubber expansion joints will reduce the transmission noise of structure 15-25dB.

It employs multi-layer sphere structure so that the vibration absorption is good and the noise reduction efficiency is significant.

It can bear relatively large working pressure. It features anti-burst and good elasticity.

It is able to deflect and displace to avoid damage caused by subsidence of foundation.

It is able to stretch and compress to avoid break of pipes due to thermal expansion and cold deformation.

It is able to connect eccentric pipe for easy replacement.

The main body employs polarized rubber, which is heat