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Union Rubber Joint Cast Iron Oil Rubber Expansion Joint

Our Union Rubber Joint Cast Iron Oil Rubber Expansion Joint is engineered specifically for pipelines conveying oil, fuel, and petroleum-based fluids. The oil-resistant rubber body maintains excellent elasticity and sealing performance even after long-term exposure to aggressive media, ensuring stable operation and reduced risk of leakage.
The Union Rubber Joint Cast Iron Oil Rubber Expansion Joint is the ideal choice for customers seeking a reliable, oil-resistant, and heavy-duty flexible connection for industrial pipeline systems. 
Contact us now for pricing, technical drawings, or customized solutions. We are ready to support your project with reliable products and professional service.
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  • Type-D

  • Ninghao

NHFLEX-D TYPE Union Rubber Joint Cast Iron Oil Rubber Expansion Joint

EPDM Thread Connection Rubber Joint for Movement Compensator    
EPDM Thread Connection Rubber Joint for Movement Compensator   


The Union Rubber Joint Cast Iron Oil Rubber Expansion Joint is a high-performance flexible connector specially designed for oil, fuel, and petroleum pipeline systems. Combining a durable oil-resistant rubber body with high-strength cast iron union fittings, this expansion joint delivers excellent sealing, flexibility, and long-term reliability under demanding operating conditions.

It effectively absorbs vibration, axial displacement, and installation misalignment, protecting pipelines, pumps, and valves from stress damage while ensuring safe and stable system operation.

By reducing pipeline stress, preventing leaks, and extending equipment life, the Union Rubber Joint Cast Iron Oil Rubber Expansion Joint delivers outstanding value with minimal maintenance requirements.

Technical Flexibility

  • Sizes: DN15–DN300 (custom sizes available)

  • Pressure Rating: PN10 / PN16 / PN25 (or customized)

  • Rubber Materials: NBR (standard), EPDM / NR optional

  • Union Material: Cast iron (ductile iron optional)

  • Temperature Range: −20°C to +120°C (depending on rubber type)


EPDM Thread Connection Rubber Joint for Movement Compensator

Compensating for Thermal Expansion and Contraction: Rubber expansion joints compensate for thermal expansion and contraction caused by temperature variations in the pipeline. They prevent excessive stress on the pipeline system due to temperature changes, thereby protecting the pipes from damage.


Absorbing Vibrations and Impacts: Rubber expansion joints absorb stresses caused by vibrations and impacts in the pipeline system, reducing the transmission of vibrations and noise. This helps protect the pipeline and related equipment from damage.

Compensating for Pipe Movements: During installation and operation, pipeline systems may experience certain degrees of pipe movement. Rubber expansion joints compensate for these movements, ensuring the proper functioning of the pipeline system.

Leak Prevention: Rubber expansion joints provide sealing performance in pipeline systems, reducing the risk of leaks and ensuring the safe operation of the pipelines.


EPDM Thread Connection Rubber Joint for Movement Compensator

Ningjin NINGHAO Machinery Co.,Ltd. Founded on No November 19, 2010. It is located in No.2 taishan road, econnmic and technological development zone, ningjin county, dezhou city, shandong province. It covers an area of 120 acres, with more than 80 employees, among has all kinds of advanced production and inspection equipment.


We can offer all kinds of rubber expansion joints. Our products include: single ball flexible rubber expansion joint, double sphere rubber expansion joint, rubber-metal pipe connectors, thread-connection rubber expansion joint and tie rods set for rubber expansion joint. Rubber expansion joint main material: EPDM ,NBR, NR, FR. The standard of the flange: ANSI150, DIN, JIS10K. The flange material: carbon steel, stainless steel, casting steel.


We have been in exporting for many years. We have wide business relations in the world. Now the main supply countries: Spain, Italy, Netherlands, Austria, French, Vietnam, India and many other countries. Our customers and clients all think highly of us.


 Last, looks forward to the cooperation with you sincerely!
                             
EPDM Thread Connection Rubber Joint for Movement Compensator    
EPDM Thread Connection Rubber Joint for Movement Compensator  

EPDM Thread Connection Rubber Joint for Movement CompensatorEPDM Thread Connection Rubber Joint for Movement Compensator

Packaging & Shipping  

EPDM Thread Connection Rubber Joint for Movement Compensator

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Ningjin NINGHAO Machinery Co.,Ltd. Founded on November 19,2010.It is located in no.2 taishan road,economic and technological development zone,ningjin county,dezhou city, shandong province.It covers an area of 120 mu,with more than 80 employees,among them,21 technicians.

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   No.2 Taishan Road, Development Zone, Ningjin County, Shandong Province

   Phone: +86-15806526381

                    +86-18561954252
   Skype: rubberjoint1
   Email: njninghaojixie@163.com

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