McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    8 Products

    Urethane Potting Compounds for Harsh Environments

    Image of Product. Front orientation. Potting Compounds. Urethane Potting Compounds for Harsh Environments.
    From shore to sea floor, these potting compounds are formulated for permanent submersion in water—even salt water. Use them to protect circuits and splices in pumps, underwater lighting, and other underwater electronics from corrosion and chemicals. Made of urethane, they withstand a wide range of temperatures, especially cold underwater conditions. They provide good electrical insulation and have excellent flexibility. Since they’re more flexible than epoxy compounds, they’re often used to protect against vibration and impact.
    Mix the two parts of these compounds together and pour them over components inside a potting box or other container. If mixing causes air bubbles, put the mixture in a vacuum chamber to remove them.
    Dry Time
    Container
    Size, fl. oz.
    Consistency
    Touch,
    min.
    Overall,
    hr.
    Mix
    Ratio
    Dielectric Strength,
    V/mil
    Thermal Conductivity,
    W/(m⋅°C)
    Temp. Range,
    ° F
    Environment
    For Use On
    Color
    Clarity
    Cannot Be
    Sold To
    Each
    Bottle Potting Compounds—Hard
    12.6Thin Liquid10242:13700.3-55 to 245Corrosive, Harsh, SubmersibleAluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Polycarbonate, Polyurethane Rubber, Ceramic, Glass, ABS, Garolite, Polyimide, PVCBlackOpaqueCanada6094N11000000
     

    Light-Activated Urethane Potting Compounds

    Image of Product. Front orientation. Potting Compounds. Light-Activated Urethane Potting Compounds.
    In just 20 seconds under a UV light, these urethane compounds form into a strong protective layer on electrical components. They withstand a wide range of temperatures and are good electrical insulators. They also stop chemicals, moisture, and dust from damaging your device. With excellent flexibility, they protect against vibration and impact. Since they also work as an adhesive, you can use them to bond and insulate components such as electrical connectors and thermal switches. No mixing required.
    Dry
    Time, sec.
    Container
    Size, fl. oz.
    Consistency
    Touch
    Overall
    Light Intensity Req.
    to Reach Full Strength
    Cure
    Type
    Dielectric Strength,
    V/mil
    Thermal
    Conductivity
    Temp. Range,
    ° F
    For Use On
    Color
    Clarity
    Each
    Bottle Potting Compounds—Extra Hard
    1.69Thin Liquid202020 sec. @ 100 mW/cm²UV Light1,800Not Rated-40 to 250Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Polycarbonate, Plastic, Ceramic, Glass, ABS, Garolite, Polyimide, PVCClearClear6612N11000000
     

    Urethane Potting Compounds

    Encase electronic assemblies in a layer of urethane for protection from dust, moisture, chemicals, mechanical shock, and vibration. Urethanes withstand a wide range of temperatures and are the best choice for cold-temperature applications. They have excellent flexibility, good chemical and moisture resistance, and provide good electrical insulation.
    Cartridge
    Image of Product. Front orientation. Potting Compounds. Urethane Potting Compounds, Cartridge.
    Cartridge potting compounds can be applied precisely through the included mixer nozzle. You’ll need a dispensing gun (sold separately).
    Model Number US2350—US2350™ also require a 4:1 plunger (sold separately) to dispense.
    Dry Time
    Mfr. Model
    No.
    Container
    Size, fl. oz.
    Consistency
    Touch,
    min.
    Overall,
    hr.
    Dielectric Strength,
    V/mil
    Thermal Conductivity,
    W/(m⋅°C)
    Temp. Range,
    ° F
    For Use On
    Color
    Each
    Loctite® Potting Compounds—Medium Hard
    US23501.69Thick Liquid90249500.51-40 to 250Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Polycarbonate, Polyurethane Rubber, Ceramic, Glass, ABS, Garolite, Polyimide, PVCBlack7369A42000000
     
    Loctite® Potting Compounds—Soft
    US26516.76Thin Liquid10161,050Not Rated-85 to 250Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Polycarbonate, Polyurethane Rubber, Ceramic, Glass, ABS, Garolite, Polyimide, PVCAmber7369A4600000
     
    Accessories for Potting Compounds
    Guns
    For Cartridge Size, fl. oz.
    Includes
    Each
    1.42, 1.58, 1.691:1 and 2:1 Mix Ratio Plungers74695A71000000
    6.76Built-In Plunger for 1:1 and 2:1 Mix Ratios7451A51000000
    Cartridge Plungers
    For Cartridge
    Size, fl. oz.
    Mix
    Ratio
    Each
    1.424:174695A4400000
    Bottle
    Image of Product. Front orientation. Potting Compounds. Urethane Potting Compounds, Bottle.
    Bottle potting compounds are easier to apply in high volumes than cartridge potting compounds. Mix the compounds together and pour them over components inside potting boxes and other containers. If mixing introduces any air bubbles, put the mixture in a vacuum chamber.
    Cannot Be Sold To—Compounds that cannot be sold to the listed areas are restricted by product labeling requirements.
    Dry Time
    Container
    Size, fl. oz.
    Consistency
    Touch,
    min.
    Overall,
    hr.
    Dielectric Strength,
    V/mil
    Thermal Conductivity,
    W/(m⋅°C)
    Temp. Range,
    ° F
    For Use On
    Color
    Cannot Be
    Sold To
    Each
    Potting Compounds—Extra Hard
    12.6Thin Liquid45244000.3-55 to 245Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Polycarbonate, Polyurethane Rubber, Ceramic, Glass, ABS, Garolite, Polyimide, PVCBlackCanada7369A111000000
     
    back to top