Classification, characteristics and uses of rubber expansion joints

Rubber expansion joint is a kind of elastic element used to compensate the deformation and stress caused by Thermal expansion, vibration and vibration in pipes, vessels and other systems. According to different rubber materials, rubber expansion joints can be divided into two types: natural rubber expansion joints and synthetic rubber expansion joints.

The natural rubber expansion joint is mainly made of natural rubber and has good flexibility, elasticity, and welding performance. It has good wear resistance, corrosion resistance, and temperature resistance, and is suitable for systems with medium temperatures between -35 ℃ and 80 ℃. Natural rubber expansion joints are mainly used in systems such as water supply, hot water, steam, and oil products, and are widely used in industries, buildings, HVAC, and other fields.

Synthetic rubber expansion joint is mainly made of synthetic rubber (such as Nitrile rubber and Neoprene), which has good oil resistance, high temperature resistance and chemical resistance. Synthetic rubber expansion joints are suitable for systems with medium temperatures between -20 ℃ and 120 ℃, and are widely used in industries such as petroleum, chemical, metallurgy, and power.

The rubber expansion joint mainly has the following characteristics:
1. Good wear resistance and corrosion resistance, able to work in harsh environments for a long time;
2. Excellent flexibility and scalability, which can compensate the deformation and stress caused by Thermal expansion of the pipeline system;
3. Good high-temperature resistance, suitable for systems with high-temperature media;
4. Good isolation and shock absorption effect, able to absorb and buffer the vibration and vibration in the system.

Rubber expansion joints are widely used in various pipelines, containers, pump stations, fans and other systems to compensate for Thermal expansion of pipelines, eliminate vibration and vibration in the system, reduce pipeline stress and deflection, and ensure the normal operation and safety of the system. At the same time, the rubber expansion joint can also play a role in noise reduction, shock absorption, vibration isolation, etc., improving the working environment and comfort of the system.


Post time: Jul-11-2023