Thermocouple Wells | McMaster-Carr

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Thermowell Connection Pipe Size

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For Thermometer Stem Diameter

1/4"

3/8"

For Thermometer Stem Length

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Thermocouple Type

REACH

Tube OD

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DFARS Specialty Metals

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Conduit Connection Pipe Size

Overall Length

Flange OD

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Environment

Conduit Connection Gender

152 Products

Thermowells

Guard thermometers and temperature probes in pressurized tanks and pipelines

71 products

Weld-In Thermowells

Weld in place for a more secure connection than our other thermowells

15 products

Thermowells for Insulated Tanks

Install thermometers and probes through thick insulation with the long nut

9 products

Food and Beverage Thermowells with Sanitary Quick-Clamp Connection

3-A certified to meet sanitary standards for food and beverage equipment

8 products

Heavy Duty Thermowells

Thick walls stand up to higher pressure and flow than other thermowells

12 products

Other Products

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

16 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

18 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

3 products