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Flange Type Bellows Single Sphere Rubber Flexible Expansion Joint NBR

Flange Type Bellows Single Sphere Rubber Flexible Expansion Joint NBR

Flange Type Bellows

NBR rubber flexible joint

flanged rubber Flexible expansion joint

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Product Details
17Years' Experience
Product Name:
High Quality Flange Type Bellows EPDM Single Sphere Flexible Expansion Joint
Flexible Expansion Joint
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Payment & Shipping Terms
Minimum Order Quantity
Packaging Details
carton or wooden
Delivery Time
5--15 working days
Payment Terms
Western Union, T/T, L/C, D/A, D/P, MoneyGram
Supply Ability
10000 sets per week
Product Description

High quality flange type bellows EPDM single sphere flexible expansion joint


Flexible expansion joints are often referred to as rubber joints. Flexible expansion joints are widely used in water, electricity, chemical industry and ship mooring systems. According to different media, the rubber materials used in flexible expansion joints are also different, including NR, SBR, IIR, NBR, EPDM, Cr, fkr, etc. Flexible expansion joints have heat resistance, acid resistance, alkali resistance, corrosion resistance and oil resistance. The structural material of the rubber joint is nylon cord fabric, and the inner and outer surfaces are made of high-strength aging resistant polar rubber. In order to prevent natural shrinkage of flexible expansion joints in long-term use and reduce aging and fracture, steel wires are used for multiple protection of rubber joints.


Performance characteristics of flexible expansion joint


1. The flexible expansion joints for pipe has high wear resistance, acid and alkali resistance, etc.

2. Flexible expansion joints for pipe can reduce vibration and reduce pressure, reduce noise.

3. Flexible expansion joints for pipe has unique properties, such as high elasticity, high air tightness, medium resistance and corrosion resistance.


Technical data of flexible expansion joint​​


Main data of flexible expansion joint

Nominal diameter(DN) Length Axial displacement(mm) Horizontal displacement Deflexion angle
mm inch mm Extension Compression mm (a1+a2)°
32 1 1/4 95 6 9 9 15°
40 1 1/2 95 6 10 9 15°
50 2 105 7 10 10 15°
65 2 1/2 115 7 13 11 15°
80 3 135 8 15 12 15°
100 4 150 10 19 13 15°
125 5 165 12 19 13 15°
150 6 180 12 20 14 15°
200 8 210 16 25 22 15°
250 10 230 16 25 22 15°
300 12 245 16 25 22 15°
350 14 255 16 25 22 15°
400 16 255 16 25 22 15°
450 18 255 16 25 22 15°
500 20 255 16 25 22 15°
600 24 260 16 25 22 15°

Note: 1. The special requirements of flexible expansion joint can be customized according to user's drawing. Flange standard is GB / t9115.1-2000. Various flange standards (GB, JB, Hg, CB, ANSI, DIN, BSEN, NF, en, JIS, ISO, etc.) can be selected for production. The rubber ball of flexible expansion joint can be used as natural rubber, EPDM, chloroprene rubber, butyl rubber, butadiene rubber, fluororubber, etc. when the flexible expansion joint above DN200 is used for suspension water supply, the pipeline must have fixed support or fixed support, otherwise the flexible expansion joint shall be installed with anti falling device.


Flexible expansion joint details show


Flange Type Bellows Single Sphere Rubber Flexible Expansion Joint NBR 0


Flexible expansion joint production Flow


Do you know how is a flexible expansion joint made?Let's see with JINGNING.


Flange Type Bellows Single Sphere Rubber Flexible Expansion Joint NBR 1


It is very important to know the compatibility between the medium of flexible expansion joint and the selected flexible expansion joint material, the range of full temperature, full pressure and full vacuum, the required movement of flexible expansion joint, and the size between pipe flanges when selecting the appropriate flexible joint pipe. With this information, JINGNING application engineers can help determine the ideal flexible expansion joint for any application.


Flexible expansion joint advantage


1. Factory price of  flexible expansion joint.

2. 16 years of manufacturing experience, 5 years of export experience.

3. Strict quality inspection, the quality far exceeds the industry standard.

4. Flexible expansion joint mold has a variety of specifications, support customization, OEM.

5. Provide free samples of flexible expansion joint.

6. Flexible expansion joint are in large stock.


Flexible expansion joint application


Flexible expansion joints are widely used in various pipeline systems, such as the connection of flexible expansion joint with pumps and valves, fire-fighting equipment and pipelines with large vibration. Pipes with frequent changes of heat and cold. Flexible expansion joint is mainly used for remote water and sewage lifting and transportation, water supply and cooling circulating water of thermal power plant, pipeline transportation of metallurgical industry, condensate water, chemical industry, cooling and dilution of petrochemical industry, and flexible connection between long and short distance pipelines in other industries. Because the flexible expansion joint has high wear resistance, flexible expansion joint is also suitable for all industries of granular and powdery and gas low temperature.




Q1:Can the flexible expansion joint be marked with customized logo?

A1:Yes,the flexible expansion joint can be marked with your logo. We could provide OEM&ODM service for flexible expansion joint.

Q2:What’s the face to face length of flexible expansion joint?

A2:The face to face length of flexible expansion joint can be L130, L152,L203... We also could accept customized length according to your requirements.

Q3:Can you provide drawings of flexible expansion joint?

A3:Yes,we could provide drawings of flexible expansion joint for you.Please contact us to get the drawing of flexible expansion joint.

Q4:What certificates of flexible expansion joint can you provide?

A4:We could provide CE,ISO certificate for our flexible expansion joint.


Q5:Can we get a sample of flexible expansion joint?

A5:Yes,we could provide samples for you to test the quality of our flexible expansion joint.

Q6:What’s the warranty period of flexible expansion joint?

A6:We provide 18 months’ warranty for our flexible expansion joint.

A3: Of cause. We could delivery by Express,by air or by sea.


Q4: What is the MOQ of flexible expansion joint?

A4: 1 Piece, You can also get it as a sample to test our product quality ,then you can purchase order to us .                                 

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