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What is a rubber expansion joint?

2025-04-30

Rubber expansion joint, also known as rubber soft joint, rubber compensator, is a key component used in pipeline systems to absorb displacement, reduce vibration and noise.

Main functions
1.Displacement compensation: absorb axial, lateral or angular displacement caused by thermal expansion and contraction and mechanical vibration of the pipeline.

2.Vibration reduction and noise reduction: reduce the noise transmitted by fluid impact and mechanical vibration through the elasticity of rubber.

3.Sealing and leakproof: flexible connection can avoid leakage caused by pipeline misalignment.

4.Stress relief: reduce stress concentration caused by pipeline installation error or foundation settlement.

Structural composition
Rubber material: usually natural rubber (NR), chloroprene rubber (CR), nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), etc., selected according to the characteristics of the medium.

Reinforcement layer: multi-layer polyester cord or steel wire skeleton to improve pressure bearing capacity.

Flange: carbon steel, stainless steel or PVC flange, used to connect pipelines.

Anti-pull-off device (optional): limit bolt or pull rod to prevent damage due to over-displacement.

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Company news about-What is a rubber expansion joint?

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What is a rubber expansion joint?

2025-04-30

Rubber expansion joint, also known as rubber soft joint, rubber compensator, is a key component used in pipeline systems to absorb displacement, reduce vibration and noise.

Main functions
1.Displacement compensation: absorb axial, lateral or angular displacement caused by thermal expansion and contraction and mechanical vibration of the pipeline.

2.Vibration reduction and noise reduction: reduce the noise transmitted by fluid impact and mechanical vibration through the elasticity of rubber.

3.Sealing and leakproof: flexible connection can avoid leakage caused by pipeline misalignment.

4.Stress relief: reduce stress concentration caused by pipeline installation error or foundation settlement.

Structural composition
Rubber material: usually natural rubber (NR), chloroprene rubber (CR), nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), etc., selected according to the characteristics of the medium.

Reinforcement layer: multi-layer polyester cord or steel wire skeleton to improve pressure bearing capacity.

Flange: carbon steel, stainless steel or PVC flange, used to connect pipelines.

Anti-pull-off device (optional): limit bolt or pull rod to prevent damage due to over-displacement.

latest company news about What is a rubber expansion joint? 0

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