Description

USA Lab PTFE Thermometer Adapter | 14/20 & 24/40 | 3.5–6 mm

The USA Lab PTFE Thermometer Adapter delivers a reliable, leak-free seal for thermometers and probes sized 3.5 mm, 5 mm, or 6 mm. A continuous port hole runs through the adapter and the thick PTFE body resists deformation under clamp pressure, helping eliminate vacuum leaks during distillation, reflux, or monitoring.

Each adapter includes two compression gaskets—one for horizontal compression and one for vertical compression—so you can dial in a secure, airtight fit on standard taper joints.

Available in 14/20 and 24/40 joint sizes, this adapter is a durable upgrade for routine lab setups that demand dependable sealing and chemical resistance.

PTFE Body Buna Compression Gaskets 14/20 & 24/40 3.5 / 5 / 6 mm Openings

Leak-Free Sealing: Horizontal and vertical compression gaskets create a tight, airtight seal on your probe.

Chemical Resistance: Thick PTFE construction with Buna gaskets stands up to common lab solvents.

Flexible Fit: Works with 3.5 mm, 5 mm, and 6 mm thermometer/probe diameters.

Why buy from USA Lab

Expert Support
Engineers & technicians on staff.

Quality First
Tested and trusted products.

Fast Fulfillment
Nationwide 1-2 day shipping.

Warranty & Parts
US-based service & spares.

Resources & Downloads

Product Guide Installation Tips Compatibility Notes End-Use Certification

Why this PTFE Thermometer Adapter?

Dependable vacuum performance — thick PTFE body plus compression gaskets help prevent leaks.
Quick, adjustable clamping — secure your probe at the desired depth with horizontal or vertical compression.
Versatile sizing — accepts 3.5 mm, 5 mm, or 6 mm probes and fits 14/20 or 24/40 glass joints.
Solvent-ready build — PTFE and Buna materials suit common lab applications.
Easy maintenance — simple to disassemble, clean, and re-seal between runs.

Talk to an expert

Get sizing help, setup guidance, and compatibility tips for your glassware.

Call 734-855-4890

Technical Specifications

Model	USA Lab PTFE Thermometer Adapter
Material	PTFE (body), Buna (gaskets)
Joint Size Options	14/20 or 24/40
Opening Size Options	3.5 mm, 5 mm, or 6 mm
Through-Port	Yes — full-length bore
Seal Type	Horizontal & vertical compression
Chemical Resistance	Excellent (PTFE)
Included Components	Adapter + (1) horizontal gasket + (1) vertical gasket
Use Range	General laboratory service (PTFE-based)
Joint Standard	Standard taper glass joints
Probe Compatibility	Thermometers/probes Ø 3.5 / 5 / 6 mm
Leak Prevention	Thick PTFE body + compression gaskets
Applications	Distillation, reflux, vacuum and atmospheric monitoring
Cleaning	Disassemble design for quick cleaning

Popular Industries & Use Cases

Laboratory Glassware Distillation Reaction Setups Vacuum Systems

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Custom Solutions

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Custom Request Consulting

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We’ll help spec the right system for your throughput.

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FAQ

Which probe diameters does this adapter fit?

The USA Lab PTFE Thermometer Adapter is designed for probes sized 3.5 mm, 5 mm, or 6 mm.

What joint sizes are available?

Choose between 14/20 or 24/40 standard taper joints to match your glassware.

How does it prevent vacuum leaks?

A full-length port and thick PTFE body work with the included horizontal and vertical Buna compression gaskets to create an airtight seal.

What’s included in the box?

Each adapter ships with the PTFE body plus two gaskets (one horizontal, one vertical) for a secure fit.

Important Shipping Notice!

DISCLAIMER:

All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.

Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.