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