Tube inserts are an essential component when installing tubing that is too soft, flexible, or thin-walled to create a secure seal with a compression fitting alone. By fitting inside the end of the tubing, the insert reinforces the tube's interior, helping maintain its shape under compression and ensuring a dependable connection. This added support allows the compression nut to properly grip and seal the tubing, preventing leaks and improving overall performance. Without an insert, very soft tubing may deform or collapse during installation, compromising the seal. Nylon provides excellent resistance to organic solvents, oils, gasoline, impact, and weathering. The 20% glass-filled polypropylene construction offers increased strength, rigidity, and broad chemical resistance for a wide range of industrial and high-purity applications. Kynar® PVDF provides exceptional resistance to highly corrosive chemicals, UV exposure, abrasion, and mechanical wear, and is recommended for use with Kynar® PVDF, PTFE, FEP, and PFA tubing.
- Nylon, polypropylene (PP), or Kynar® PVDF
- Provides additional internal support for soft, flexible & thin-wall tubing
- Increases rigidity at the tube end for improved fitting performance
- Helps prevent tubing collapse, deformation & seal failure
- Use Kynar® fittings with Kynar®, PTFE, FEP & PFA tubing
- Temperature range: -80°F to 250°F (Kynar®), -40°F to 250°F (Nylon) & -30°F to 225°F (PP)
- Nylon & Kynar® have FDA-compliant resin/materials & are NSF/ANSI/CAN listed
- Polypropylene is NSF/ANSI/CAN 61 listed