Eccentric rubber expansion joint is a single open wide arch type. Eccentric in design, the expansion joint body tapers on one side transition.

Eccentric rubber expansion joint effectively dampens and insulates downstream piping against the transmission of noise and vibration generated by mechanical equipment. Noise and vibrations caused by equipment can cause stress in pipe, pipe guides, anchors and other equipment downstream. The expansion joints will help relieve noise and vibration occurrences in a pipe system. Water hammer and pumping impulses can also cause strain, stress or shock to a piping system to help compensate for these system pressure spikes.

Compensates for Misalignment
Rubber expansion joints are commonly used by contractors and plant personnel to allow for slight pipe misalignment during installation of new piping and or replacement applications. (Although rubber expansion joints can be made with permanent offsets, it is suggested that piping misalignments be limited to no more than 1/2 the rated catalog movement. )

Wide Service Range and Less Weight
Engineered to operate up to 200 PSIG (nominal size dependent) or up to 250°F (elastomer dependent), the eccentric rubber expansion joint  can be specified for a wide range of piping system requirements. The eccentric rubber expansion joint are constructed in various elastomers with rubber impregnated polyester tire cord and ASTM wire to make up the pressure restraining member. This lightweight design installs easily and costs less to ship.

Material Identification
Dates and elastomer designations. All Neoprene Tube/Neoprene Cover (NN) and Nitrile Tube/Neoprene Cover (NP)elastomer designated joints meet the Coast Guard Requirements and conform to ASTM F 1123-87.