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PTFE Lined Rubber Expansion Joint

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Welded Metal Bellows Expansion Joint
- Brand: Xinhua Feng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Welded metal bellows expansion joint: The rigid compensation core for high-temperature and high-pressure pipelinesWelded Metal Bellows Expansion Joint takes the metal bellows as the core compensating element and realizes the rigid connection with the pipeline through the welding process. With the characteristics of...

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PTFE Lined Flexible Rubber Expansion Joint
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Polytetrafluoroethylene-lined flexible rubber expansion joint: A powerful compensating tool for pipelines that combines corrosion resistance and flexibilityPTFE Lined Flexible Rubber Expansion Joint is a pipe compensation element that combines the flexibility of rubber and the corrosion resistance of...

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China PTFE Lined Rubber Expansion Joint Suppliers

A PTFE Lined Rubber Expansion Joint is a high-performance flexible connector combining rubber’s elasticity with PTFE’s chemical resistance, ideal for corrosive fluid pipelines. Its structure features a rubber outer layer—made from EPDM or nitrile for flexibility—lined with a seamless PTFE inner layer, known for inertness to almost all chemicals, acids, and solvents. This dual design offers both displacement compensation and media compatibility.

The rubber layer absorbs axial, lateral, and angular movements from thermal expansion or vibration, protecting pipes and equipment. The PTFE lining ensures a smooth, non-stick inner surface, preventing media buildup and ensuring easy cleaning. It comes with Flange or threaded ends, with a Flange Adaptor enabling compatibility with varying flange specs, simplifying installation in complex systems.

In integration, it works with key components: a Bellow Expansion Joint handles extreme thermal displacements, while this joint resists chemical corrosion. A Flexible Metal Hose adds routing flexibility nearby. A Dismantling Joint allows quick maintenance access, and a Duckbill Check Valve prevents backflow of corrosive media.

Suitable for chemical processing, pharmaceutical, and wastewater industries, it offers durability, leak resistance, and long service life. Unlike standard Rubber Joints, it withstands harsh media without degradation. By balancing flexibility and chemical protection, it ensures reliable performance in aggressive pipeline environments, safeguarding system integrity and efficiency.

PTFE Lined Rubber Expansion Joint

‌PTFE lined rubber expansion joint‌, also known as PTFE rubber joint or PTFE lined soft joint, is a pipe connection element with polytetrafluoroethylene (PTFE) material lined inside the rubber joint. This design combines the advantages of PTFE and rubber, improving the durability and application range of the product. PTFE lined rubber expansion joint is based on ordinary rubber joints, with an additional layer of PTFE coating inside. This coating is mainly white and can effectively protect the rubber joint from being corroded by corrosive media. The joint is composed of inner and outer layers of rubber, cord layers and wire rings to form a tubular rubber part, which is combined with a metal flange or parallel joint loose sleeve after vulcanization molding.

Rubber material

NR NBR EPDM FPM

Connection method

Flange Connection

Product Detail

PTFE lined rubber expansion joints are usually composed of rubber body, PTFE lining, metal flange (or steel wire reinforcement layer) and fastening devices (such as bolts, nuts). Among them, the rubber body provides good flexibility and shock absorption, and the PTFE lining gives the joint excellent corrosion resistance.

Lining layer: Made of PTFE material, it has extremely high chemical stability and corrosion resistance, and can resist the erosion of most chemical media such as acids, alkalis, and salts.

Rubber layer: The outer layer is made of rubber material, which provides good elasticity and sealing performance, and has certain wear resistance and high and low temperature resistance.

Connectors: Generally, flange connection is adopted for easy installation and disassembly, and some products also use threads or other connection methods.

CUSTOMER

VOICE

WHAT A CLIENT SAY?

According to customer feedback, PTFE lined rubber expansion joints perform well in a variety of corrosive media, such as strong acids, strong alkalis, high-temperature oils, etc., and can maintain their stable performance under long-term use. In certain specific industrial environments, such as chemical and pharmaceutical industries, the joint effectively prevents the corrosion of the medium to the pipeline and extends the service life of the pipeline system. The joint adopts advanced sealing technology to ensure good sealing effect under various working conditions. Customers said that under high pressure, high temperature or vacuum conditions, the joint did not leak, ensuring the safe operation of the system. In long-term use, the joint can significantly reduce maintenance costs and replacement frequency, and improve overall economic benefits. Most customers believe that the joint has excellent performance, installation, maintenance and other aspects, and are willing to recommend PTFE lined rubber expansion joints to other companies or individuals.

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Application areas

The application areas of pipelines are very wide, mainly including municipal engineering, building water supply and drainage, industrial production, agricultural irrigation, new energy and other fields.

FAQ

Important things you should know

What are the implementation standards for PTFE lined rubber expansion joints?

ASTM standards, JIS standards and DIN standards.

What should be considered when installing PTFE lined rubber expansion joints?

Quality requirements, surface conditions, size requirements, temperature, pressure, media, etc.

What should be paid attention to during use?

During use, it should be noted that acidic and alkaline media should not be used to ensure the safety and stability of the equipment.

What are the advantages of PTFE lined rubber expansion joints?

High temperature resistance, low temperature resistance, corrosion resistance, shock absorption and noise reduction, high elasticity and sealing, etc.

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PTFE Lined Rubber Expansion Joint

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PTFE Lined Flexible Rubber Expansion Joint

Welded Metal Bellows Expansion Joint

PTFE Lined Flexible Rubber Expansion Joint