Non Metallic Expansion Joints are flexible connectors designed to provide stress relief in ducting systems by absorbing movement caused by thermal changes. They are fabricated from a wide variety of non-metallic materials including synthetic elastomers, fabrics, insulation materials and fluoroplastics depending on the designs. The non-metallic expansion joints offer the possibility of absorbing multi-plane movements with a relatively short face-to-face dimension. Non Metallic Expansion Joints are designed not only for relieving stress due to thermal conditions but to eliminate transmission of vibrations caused by fans and other equipment in ducting systems. They are used in many industries such as power generation, pulp & paper, co-generation and ship building.