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Pressure and Vacuum Feedthroughs

Series PF - Feedthroughs for single elements

These feedthroughs are designed for sealing single elements, usually sensors, probes or tubes, where they penetrate a pressure or environmental boundary.

Common applications include sealing sheathed thermocouples and resistance thermometers, small-bore tubes and other types of sensor where they enter a process enclosure.

Series PF feedthroughs seal elements from 0.5mm dia. to 19.05mm (3/4”). There are five body sizes having 1/16”, 1/8”, 1/4”, 1/2” and 3/4” process connections with BSPT (conical gas or DIN 2999 ‘R’) and NPT threads.

Spectite® feedthroughs are designed for ease of assembly and installation. Elements can be adjusted, removed and replaced when not under pressure or vacuum conditions.
  • Seal on probes, sensors, small-bore tubes and other similar elements
  • Immersion length of the element can be easily adjusted
  • Five sizes of feedthrough assembly
  • Designed for easy installation of single elements 0.5mm to 19.05mm (3/4”) diameter
  • Pressure range: Vacuum to 700 bar*
  • Temperature range: <-200°C to +870°C*
  • Stainless steel body (316L), internal metal components and cap
  • Choice of five sealant materials
  • Reusable fitting – internal components replaceable
  • A large range of feedthroughs is available to buy online

    * Dependent on sealant and fitting selected

Enquiry Form

1. Thread Size Required


  see table

2. Element diameter


 see table

3. Sealant Type


 see table

4. Quantity Required


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If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below



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