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    Thermowell Stem Style

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    A pioneer and global leader in manufacturing thermowells

    We ensure only the highest quality and precision in every thermowell we manufacture.

    Whether they are custom-made for highly specialized measurements or they are standard configuration, each and every thermowell is built to meet or exceed accepted standards.

    Mac-Weld offers a wide variety of various process connections and styles

    Shank Styles

    • Stepped Thermowells
    • Straight Thermowells
    • Tapered Thermowells
    • Helical Thermowells


    Precision | Quality | On-time Delivery

    Our thermowells are designed and manufactured 100% in house, and are made to accept standard and custom made thermometers, thermocouples, bulbs and RTD’s. Mac-Weld flange thermowells are also available in a large variety of sizes and configurations that include, but are not limited to, raised face, flat face, and ring type joint.

    • Mac-Weld thermowells accept standard or custom-made thermometers, thermocouples, bulbs and RTD’s
    • All are manufactured in house, quality checked and tested to code before being shipped
    • Mac-Weld custom software, V-MAC, utilized for thermowell wake calculations
    • Large variety of standard and exotic materials available
    • CRN approved thermowells
    • Various NDT options
    • NACE compliant
    • Sanitary (Tri-Clamps) Thermowells available, 8-12 Micro inch R/A finish

    Over 40 years experience manufacturing thermowells

    Our Products

    As one of the largest thermowell and instrument hardware manufacturers in North America, we have a wide selection of products available to help our clients with all their projects. See below for a list of available products and options. If you don’t see what you’re looking for? Not only do we offer what you see here, but we also have a large variety of custom products and services.

    Call our office today at 1-877-622-9353 for specialty components, and let us help you get your project back on track.