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.

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.

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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

Tailored tanks, skids, and integration help.

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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.

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Specifications

Brand:	USA Lab
Material:	PTFE
Lead Time:	1–3 Days
Warranty Term:	1 Year
Return Window:	30 Days

Shipping & Returns

1–3 Business Days Standard Processing

Return Policy ↗ Varies by Product Warranty Policy ↗ Varies by Product

3 Days to Claim Inspect on Arrival

Shipping

Orders ship within 1–3 business days after payment clears. We ship Monday through Friday via UPS, USPS, and freight carriers.
Freight items (crated, hazmat, dropship, or special packaging) can take 1–5 business days to ship.
Expedited shipping speeds up transit, not processing. Contact us for true rush orders.
PO Box addresses ship USPS. Alcohols, chemicals, and hazmat cannot ship to a PO Box.

Full Shipping Policy

Delivery & Damage Claims

Inspect every shipment on arrival. Claims must be filed within 3 business days.
Visible damage? Refuse the delivery and have the driver document it. We will file the claim and ship a replacement.
Concealed damage: contact us within 2 days with photos of the packaging and item. Keep all packing materials.
Freight services (liftgate, residential, inside delivery) are the customer's responsibility to select for their location.

Damage & Freight Details

Returns

USA Lab branded products are returnable within 30 days of order date with prior authorization. Email us before sending anything back.
Solvents, chemicals, and consumables are not returnable once shipped. Custom and made-to-order items are final sale.
Unused items in original packaging carry a 15% restocking fee. Defective items ship back on us.
Items showing any signs of use, wear, contamination, or modification are not eligible for return.
Glassware damage must be reported within 3 business days of delivery for replacement or refund.

Full Return Policy

Custom & Made-to-Order Items

Customized and made-to-order products are final sale and not eligible for return under any circumstances.
This includes ductless fume hoods, configured tanks and reactors, and any item built to your specifications.
These products are manufactured specifically for your application. Confirm sizing, voltage, and configuration with our team before ordering.
Damage claim coverage still applies. Inspect on arrival and report issues within 3 business days.

Return Eligibility Details

Warranty

USA Lab products are covered against manufacturing defects for up to 3 years, depending on product line.
1 year: chillers, heaters, rotovaps, reactors, vacuum ovens, mixers, and most equipment. 2 years: UVP vacuum pumps. 3 years: scientific freeze dryers.
Wear items (glassware, gaskets, heating elements, sensors) and fittings/steel are not covered. Report defects within 30 days (3 days for glass).
Non–USA Lab brands are covered by their manufacturer's warranty. See the product's Warranty tab.

Full Warranty Policy

International Orders

Import duties, taxes, VAT, and brokerage fees are not collected by USA Lab and are the receiver's responsibility.
Verify your country's customs charges and import restrictions before ordering.
Refused or unclaimed international shipments are refunded minus shipping and a 15% restocking fee.
International orders are generally non-returnable. Damaged items must be reported within 3 business days.

International Guidelines

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Summaries above are provided for convenience. The full Policies & Warranty Info pages govern all orders and may be updated at any time.

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USA Lab PTFE Thermometer Adapter

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