Rubber Bellows Expansion Joints Rubber Lined Large Diameter DN900 FF

Short Description:

Name:Rubber Expansion Joints
Material:Carbon Steel Flange/ Stainless Steel Flange
Connection mode:Flange
Acceptance: OEM/ODM, Trade, Wholesale, Regional Agency,
Payment: T/T, L/C, PayPal

Any inquiries we are happy to reply, please send your questions and orders.
Stock Sample is Free & Available

Product Detail





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Product Introduction

Rubber expansion joints are also called rubber joints, rubber compensator, flexible rubber joints,shock absorbers, rubber shock absorbers, etc. The product consists of a tubular rubber part composed of inner and outer rubber layers, cord fabric layers and wire rims, which is vulcanized at high temperature and high pressure and then combined with a metal flange or a loose sleeve of a parallel joint. It can reduce vibration and noise by virtue of high elasticity, high air permeability, medium resistance, weather resistance and radiation resistance of rubber, and can compensate for thermal expansion and cold contraction caused by temperature change. It is widely used in various pipeline systems.


It has high internal density, can withstand high pressure, and has good elastic deformation effect.


Reduce vibration, noise and lightness.


Connection with pumps, valves and fire-fighting equipment, pipes with large vibration, and pipes with frequent changes in cold and heat.

Applicable media:

Seawater, fresh water, cold and hot water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, product oil, air, gas, steam and granular powder.

Connection mode:

Generally, loose flange type (semi seal), fixed flange type (full seal), clamp type and threaded connection are available.

Material of rubber flexible joint:

The rubber flexible joint ball is composed of a rubber tube with multiple layers of rubber scraped nylon cord fabric and outer rubber layer in the inner rubber layer and reinforcement layer. The rubber materials used are different according to different media, including natural rubber, styrene butadiene rubber, butyl rubber, nitrile rubber, ethylene propylene diene monomer, neoprene rubber, silicone rubber, fluorine rubber, etc. It has the functions of heat resistance, acid resistance, alkali resistance, corrosion resistance, abrasion resistance, oil resistance, etc.

The specific classifications of rubber flexible joints are: Negative pressure resistant rubber joint, acid and alkali resistant rubber joint, oil resistant rubber joint, high temperature resistant rubber joint, wear-resistant rubber head.

Full Seal Large Diameter Rubber Expansion Joint(FF)

The full sealing rubber joint can greatly reduce the vibration and noise of the pipeline system. It can fundamentally solve the problems of interface displacement, axial expansion and misalignment of various pipelines.

JGD flexible rubber joint can be made into acid resistant, alkali resistant, corrosion resistant, oil resistant, heat resistant and other varieties according to different materials, and can adapt to various media and environments.

When the pump is used at the inlet and outlet, it should be located at the side of water resources. The reduced aperture of metal material reducing connector should be assembled between the water source and large caliber water resources. When the pipe offset is greater than or equal to a large number of connectors, the total number of connectors shall be raised to offset in parallel. It is prohibited to make the connector at the end deflection value offset and error to adjust the pipe deviation.

The rubber expansion joint is small in size, light in weight, good in ductility, and convenient in assembly, maintenance and replacement. During assembly, radial, transverse and angular offsets can be formed, which will not be limited by different pipe axes and uneven flanges. It can reduce the noise of structure transmission and has strong shock absorption function. During assembly, adjust the assembly length of both sides and flanges, and tighten the pressure to make them a whole with certain deviation. When the installation and maintenance are convenient, adjust according to the site specifications to transfer the radial driving force to all. It is used to transport sea surface, water, cold and hot water, domestic sewage treatment, liquefied gas and other substances.

Rubber expansion joints are widely used in water heating and installation of natural ventilation pipes, water supply and drainage and circulating water pipes, refrigeration pipes, anti-corrosion pipes, fire fighting and refrigeration compressor pipes, as well as in laboratories, scientific research institutions, ships, ships and other pipeline engineering projects to reduce vibration and noise, offset and other maintenance and management methods. The pipe shall be stably suspended in the air water supply and drainage system on the rubber double ball joint on the support, support or anchor frame.

rubber expansion joint FF

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    1.Professional manufactory.
    2.Trial orders are acceptable.
    3.Flexible and convenient logistic service.
    4.Competitive price.
    5.100% testing,ensuring the mechanical properties
    6.Professional testing.

    1.We can guarantee the best material according to related quotation.
    2.Testing is performed on each fitting before delivery.
    3.All packages are adapt for shipment .
    4. Material chemical composition is conformed with international standard and environment standard.

    A) How can I get more details about your products?
    You can send an email to our email address. We will provide catalogue and pictures of our products for your reference.We can also supply pipe fittings, bolt and nut, gaskets etc. We aim to be your piping system solution provider. 

    B) How can I get some samples?   
    If you need, we will offer you samples for free, but new customers are expected to pay express charge. 

    C) Do you provide customized parts? 
    Yes, you can give us drawings and we will manufacture accordingly. 

    D) To which country have you supplied your products?
    We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru , Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.). 

    E) I can’t see the goods or touch the goods, how can I deal with the risk involved?  
    Our quality management system conforms to the requirement of ISO 9001:2015 verified by DNV. We are absolutely worth your trust. We can accept trial order to enhance mutual trust.

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