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PTFE Expansion Joints

PTFE Expansion Joints

Solid-molded PTFE expansion joints are corrosion-resistant and made to withstand the high-pressure and temperature in a compact, space-saving design.

Standard sizes from 1” to 12” with two, three, or five convolutions; available in sizes up to 48”. Kadant Unaflex PTFE expansion joints can operate with temperatures from -300°F to 400°F from a full vacuum to 160 psi depending on the type and number of convolutions.


  • Solid-molded PTFE with high resistance to corrosion
  • High thermal stability and resistance to age cracking
  • Short face-to-face dimensions
  • Elastomeric (Viton, EPDM, Neoprene) and metal covers available
  • Viton and Kevlar overlays available for higher pressures


  • High strength and versatility
  • Simple retrofit into existing piping system
  • Improved flow, less turbulence
  • Reduced noise and vibration
  • Application-specific joints
  • Cost-effective solution to compensate for movement in piping systems

Custom Solutions

Have an application that requires a specialized solution? We focus on making the best solution possible with quick turnaround. We are ready to engineer your custom-designed expansion joint to fit your application. Our goal is to outperform each and every time, and we do this by working closely with our customers to develop reliable products that exceed your expectations.

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Complete Solutions

From products and services to training and support, we can design, manufacture, install, and maintain your fluid handling systems. Partnering with us ensures your operations are fully integrated for maximum performance.