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PTFE-Lined Expansion Joint

PTFE-LINED RUBBER EXPANSION JOINT

A rubber expansion joint with an internal PTFE lining, designed to handle highly aggressive chemicals, solvents, and corrosive media while maintaining the flexibility and vibration-damping benefits of rubber.

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PTFE-Lined

expansion joint

The PTFE-Lined Rubber Expansion Joint combines an elastomeric body (EPDM, Neoprene, Nitrile, etc.) with a seamless PTFE liner molded or bonded inside. The PTFE liner provides exceptional chemical resistance and protects the elastomer from attack, while the rubber body allows axial, lateral, and angular flexibility with excellent vibration and noise absorption. Typically supplied with flanged ends, these joints are used where standard elastomers cannot withstand the conveyed medium.

  • Size Range (DN)

    DN25 – DN1200 (larger on request)

  • Materials (Elastomer)

    EPDM, Nitrile, Neoprene, Nitrile, Natural Rubber (outer body)

  • Liner

    Virgin PTFE (white), available in FDA-approved grades

  • Reinforcement

    Nylon tire cord with steel wire

  • Movements

    Axial, Lateral & Angular

  • Pressure Rating

    PN10 – PN16 (up to PN25 on request)

  • Temperature Range

    –20°C to +150°C (depending on outer rubber & PTFE grade)

PTFE-Lined

expansion joint

The PTFE-Lined Rubber Expansion Joint combines an elastomeric body (EPDM, Neoprene, Nitrile, etc.) with a seamless PTFE liner molded or bonded inside. The PTFE liner provides exceptional chemical resistance and protects the elastomer from attack, while the rubber body allows axial, lateral, and angular flexibility with excellent vibration and noise absorption. Typically supplied with flanged ends, these joints are used where standard elastomers cannot withstand the conveyed medium.

  • Size Range (DN)

    DN25 – DN1200 (larger on request)

  • Materials (Elastomer)

    EPDM, Nitrile, Neoprene, Nitrile, Natural Rubber (outer body)

  • Liner

    Virgin PTFE (white), available in FDA-approved grades

  • Reinforcement

    Nylon tire cord with steel wire

  • Movements

    Axial, Lateral & Angular

  • Pressure Rating

    PN10 – PN16 (up to PN25 on request)

  • Temperature Range

    –20°C to +150°C (depending on outer rubber & PTFE grade)

Typical use case: Extensively used in chemical process lines where aggressive acids, alkalis, or solvents are present, ensuring safe and reliable operation.

Other applications:

  • Pharmaceutical and biotech processing
  • Food & beverage industries (FDA-grade PTFE liners)
  • Piping systems handling chlorine, sulfuric acid, or caustics
  • Offshore and marine systems requiring high corrosion resistance
  • Combines flexibility of rubber with chemical resistance of PTFE
  • Handles highly corrosive and abrasive media
  • Protects elastomer body from chemical attack, extending service life
  • Absorbs vibration, noise, and misalignment like standard rubber joints
  • Available in FDA-approved PTFE grades for hygienic applications
  • Reduced maintenance and downtime in aggressive service environments
Ptfe Expansion Joint
Flanges

stainless steel, galvanized, or lined flanges as required

Control Rods

for restrained installations and controlled movement

External Covers

protect rubber body from UV, ozone, or weathering

Vacuum Support Rings

available for negative pressure service

Custom PTFE Grades

anti-static or conductive liners for special service

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