These thermowells are designed for mounting temperature sensors in pipes and tanks.The thermowells are designed to handle this stress while providing good thermal contact with the fluid.They also provide isolation, if the sensor needs to be serviced the system can remain in operation without having to drain the lines. The thermowells are machined from a single piece of bar stock, there are no welds as found on competing products.

Product Highlights:

  • 304 stainless steel or brass
  • Construction: machined from a single piece of bar stock, no welds.
  • Other lengths and materials available upon request
  • Limited lifetime warranty

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$5.50 - $8.50

Part number: N/A Category:

Available Options:


Brass and Stainless Steel Thermowells

All stainless steel sensors are made with 304 Stainless machined from a single peiece of stock, there are no welds as found on competing products. The thermowells are made to fit industry standard 6mm diameter temperature probes, you can use your own temperature probes or select from our own lineup here:

The standard thread is 1/2′ NPT. We also have GPT thread and other custom models available, email us and send drawings for a quick quotation.

The ’10mm for aquastats’ thermowells are for mounting thermal expansion type probes such as the Honeywell T991. These ‘Aquastat’ type thermowells also come with a clip to hold the aquastat in place.

The flange type is used for boiler stack temperature probes and is available in stainless steel only.


Part Number Scheme:

Note: 3″and 8″ lengths are available as are many custom styles. Contact us with your drawings and approximate order volume for a quick quote.

Additional information

Weight N/A
Inner Diameter

10mm for aquastats, DDC type, 6mm probes


Brass, Stainless steel 304

Probe Length

2 inch, 3 inch, 4 inch, 6 inch, 8 inch


BSP thread, NPT thread