rubber joint

Non-metallic expansion joints have been used in place of the traditional all-metal expansion joints to solve problems caused by the thermal and mechanical stresses generated in complex systems. Even though the power generation industry is a main user of rubber expansion joints, the product has found acceptance in many other industries.

Three reasons to use rubber expansion joints: 
1. To prevent stresses due to expansion and contraction 
2. To insulate against the transfer of noise
3. To compensate for misalignment

Features:

Large movement potential: the non-metallic expansion joint offers multi-plane movements in a shorter face-to-face dimension.

Corrosion resistance: the ability of various rubbers and plastics to stand up to corrosive chemicals can extend the life of an expansion joint.

Sound and vibration elimination: the outstanding vibration and sound attenuation characteristics of elastomers help prevent premature system degradation. 

Ability to stand up to high temperatures: with the use of special materials, non-metallic expansion joints can withstand over 1000°F operating temperatures.

Benefits:

Lower systems design costs

Low material costs

No gaskets required

Lower replacement costs

Rubber expansion joints also effectively confront these problems:

Vibration

Noise 

Shock

Corrosion

Electrolysis

Induced Forces

Warning: 
Expansion joints may operate in pipelines or equipment carrying fluids and/or gases at elevated temperatures and pressures. Precaution should be taken to insure proper installation and regular inspection. Care is required to protect personnel in the event of leakage or splash.