Manufacturer Rubber Expansion Joint DN400 16

Product introduction

Rubber expansion joint is a flexible connector fabricated of natural and/or synthetic elastomers and fabric, if necessary, internal metallic reinforcements designed to provide stress relief in piping systems due to thermal movements and mechanical vibration.

There are lots of material selection based on usage area of rubber expansion joints. Rubber expansion joints can absorb large movement in very short distance. They provide all directional movement, such as axial, angular, lateral and torsional that may occur from external conditions. Also reduce wind, shock loading and seismic movements.

Manufacturer Rubber Expansion Joint DN400 16" Single Sphere Flexible EPDM Carbon Steel Flange Connector

Gongyi Runda Pipeline Manufacturing Co., Ltd.

Structure of rubber flexible joint: including a rubber sphere and two flanges
Remarks: We can also provide separate rubber sphere and flanges


Do you want to get a quick quotation? Please provide us with the following information

1.Nominal Diameters: DN15-DN4000

2.Rubber joint material: EPDM,NBR,CR,PTFE,etc.

(Remarks:It doesn't matter if you don't know the material, Please tell us the medium and temperature during operation, we will recommend suitable products for you)

3.Flange material: SS,CS,CS galvanized,ductile iron,PPH (PN10, PN16)

4.Flange standard: DIN PN10,PN16,PN25/ANSI 150LB,300LB/JIS 10K,etc.

The above are our regular materials and standard,Special designed and needs,please feel free to click here and contact us.

Product parameters

Gongyi Runda Pipeline Manufacturing Co., Ltd.

above data is for reference,much more details and any questions,pls click here to contact us now.


Advantages of rubber expansion joints

1.rubber expansion joints provide excellent compensating features by their highly rated rubber bellows to compensate thermal expansion and compression.

2.They may be produced with flange and threaded connections.

3.They may have two bellowed structure in order to absorb large movements.

4.Rubber expansion joints are designed to compensate axial, lateral, angular and transverse movements at the same time.

5.reduce tension in the pipelines.

6.prevent noise and vibration to protect the connected systems.

7.compensate for ground, and settlement of especially the new buildings.

8. provide proper sealing with their elastic structures where the pipelines pass through walls.


Application Areas

• Mechanical installation and machine engineering.

• Domestic water and liquid industry.

• Shipbuilding and marine engineering.

• Power plants and nuclear stations.

• HVAC applications.

Why choose us?-we are top supplier in the pipe fitting industry

Our values: Quality first, service first, integrity and responsibility,

Loyal to the goal, efficient execution, trust and cooperation.


We strictly adhere to our value orientation.

We look forward to continuing our cooperation with you.

 Gongyi Runda Pipeline Manufacturing Co., Ltd.

What are our strengths?

1) We have our own powerful factory,Primary source of goods, save you the middle price difference, you can visit the factory on-site or online.

2) A large number of spot stocks,meet your Order Batching and delivery needs, as well as unexpected surprise prices.

3) Nearly 20 years of factory production and sales experience, professional quality inspection of goods, product quality is guaranteed.

4) Can customize: exclusive LOGO and product booklet, packing carton, can provide drawings and technical support.

5) Exporting to nearly 100 countries, well-experienced and professional in serving overseas customers.

6) We can provide one-stop service to save you a lot of time and cost.

Gongyi Runda Pipeline Manufacturing Co., Ltd.

Gongyi Runda Pipeline Manufacturing Co., Ltd.


Rubber Expansion Joints Installation Manual:

1) Install the joints within allowable movements of elong ation, compression, eccentricity, angular movement, etc.

2) When the joints are in displacement, note for the joints not to touch the structure and equipment (especially sharp edges) near the installation.

3) Take measurement and make centering correctly not to add unnecessary outer force (compression, tension, torsion,etc.) when connecting the joints to the pipes.

4) When welding or cutting the pipes nearby after installation, protect the joints with a cover (board or cloth) from sparks.In case of the possibility of heat transmission, take some countermeasure like taking the joints off from the pipe, etc.

5) When installation to the outdoor pipes, make lagging to the joints to prevent the joints body aging.

Our types of Rubber Joint Series

Gongyi Runda Pipeline Manufacturing Co., Ltd.

        double sphere                      end face fully sealed                       PTFE lined                               union screw

rubber exexpansion joint                   rubber joint                      rubber flexible joint                       flexible joint 





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