McMaster-Carr logo
    Filter by
    For Maximum Thread Diameter
    Maximum Pressure for Fluids
    Locking Strength
    Reaches Full Strength
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    55 Products

    Thread Sealants for Hydraulic and Compressed Air Systems

    Image of Product. Front orientation. Thread Sealants. Thread Sealants for Hydraulic and Compressed Air Systems, Tube.
    Image of Product. Front orientation. Thread Sealants. Thread Sealants for Hydraulic and Compressed Air Systems, Bottle.

    Tube

    Bottle

    Formulated for high lubricity, these sealants allow easy assembly of finely threaded hydraulic and compressed air system components. They're also free of fillers that could contaminate system media. These sealants are anaerobic, so they don’t begin to harden until coated surfaces are threaded together, blocking exposure to air.
    Medium Locking Strength—These sealants have medium locking strength, which prevents threads from loosening due to vibration and shock. They require a hand tool to unthread.
    Cannot Be Sold To—VOC (Volatile Organic Compounds) regulations restrict sales to the listed jurisdictions/areas.
    Container
    Max.
    Pressure, psi
    Temp.,
    ° F
    Size, fl.
    oz.
    Type
    Begins to
    Harden
    Reaches Full
    Strength, hr.
    For
    Fluids
    For
    Gases
    Min.
    Max.
    For Max.
    Thread Dia.
    Consistency
    Specs.
    Met
    Certification
    Mil. Spec.
    Color
    Cannot Be Sold To
    Each
    Medium Locking Strength
    1.7Tube60 min.2410,000300-654002"PasteMil. Spec.
    UL Listed
    MIL-S-15204White45855K84000000
    1.7Bottle6 hr.2410,000300-653002"Thin LiquidASTM D5363Mil. Spec.MIL-S-22473 Grade JVYellowAlexandria, VA; Arlington County, VA; Colorado; Connecticut; Delaware; District of Columbia; Fairfax County, VA; Fairfax, VA; Falls Church, VA; Illinois; Indiana; Loudoun County, VA; Maine; Manassas Park, VA; Manassas, VA; Maryland; Massachusetts; Michigan; New Hampshire; New Jersey; New York; Ohio; Pennsylvania; Prince William County, VA; Rhode Island; Stafford County, VA; Utah45855K9100000
    8.4Tube60 min.2410,000300-654002"PasteMil. Spec.
    UL Listed
    MIL-S-15204White45855K8500000
     

    High-Density Thread Sealant Tape

    Image of Product. Front orientation. Thread Sealants. High-Density Thread Sealant Tape.
    This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.
    Max.
    Pressure, psi
    Each
    Wd.
    Lg.,
    yd.
    Density,
    g/cm³
    For
    Fluids
    For
    Gases
    Temp. Range,
    ° F
    For Max.
    Thread Dia.
    Food Industry Std.
    Specs. Met
    Certification
    Mil. Spec.
    Color
    1-11
    12-Up
    PTFE
     
    0.0032" Thick
    1/4"141.210,00010,000-450 to 5501/2"Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730Gray7346A110000000000
    1/4"141.210,00010,000-450 to 5501/2"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K2200000000
    3/8"141.210,00010,000-450 to 5503/4"Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730Gray7346A1600000000
    3/8"141.210,00010,000-450 to 5503/4"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K1900000000
    1/2"141.210,00010,000-450 to 5501"Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730Gray7346A1200000000
    1/2"141.210,00010,000-450 to 5501"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K3300000000
    3/4"141.210,00010,000-450 to 5501 1/2"Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730Gray7346A1300000000
    3/4"141.210,00010,000-450 to 5501 1/2"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K4400000000
    1"141.210,00010,000-450 to 5502"Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730Gray7346A1400000000
    1"141.210,00010,000-450 to 5502"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K55000000000
    1 1/2"141.210,00010,000-450 to 5503"Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730Gray7346A150000000000
    1 1/2"141.210,00010,000-450 to 5503"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K660000000000
    2"141.210,00010,000-450 to 5504"FDA Compliant 21 CFR 177.1550
    Fed. Spec. A-A-58092 Type IIC-UL Listed
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K770000000000
     
    0.0035" Thick
    1/4"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K81000000000
    3/8"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K820000000000
    1/2"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K830000000000
    3/4"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K840000000000
    1"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K850000000000
    1 1/2"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K860000000000
    2"141.910,00010,800-450 to 5506"FDA Compliant 21 CFR 175.105
    FDA Compliant 21 CFR 177.2600
    Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730White6802K870000000000
     

    High-Temperature Thread Sealants

    Image of Product. Front orientation. Thread Sealants. High-Temperature Thread Sealants.
    These sealants have high locking strength, so they work in demanding applications, such as securing mounting studs in motor housings. They also withstand applications with large temperature swings.
    Heat—Heat cure sealant requires heat of at least 212° F to harden. Above 300° F, the sealant hardens in about 15 minutes. For temperatures below 300° F, it may take up to 4 hours to harden. It requires both heat and a hand tool to unthread.
    1,500° F Maximum Temperature—1500° F max. temp. sealants are for use on cement-lined pipe joints prior to welding. The heat from the welding torch helps them begin to harden.
    Cannot Be Sold To—Sealants that cannot be sold to the listed regions are restricted due to local VOC (Volatile Organic Compounds) regulations.
    Container
    Max.
    Pressure, psi
    Temp.,
    ° F
    Mfr. Model
    No.
    Size, fl.
    oz.
    Type
    Begins to
    Harden
    Reaches Full
    Strength, hr.
    For
    Fluids
    For
    Gases
    Min.
    Max.
    For Max.
    Thread Dia.
    Consistency
    Mil. Spec.
    For Use On
    Color
    Cannot Be Sold To
    Each
    Medium Locking Strength
     
    Heat Cure Loctite®
    554016Can10 sec.122,9002,900-401,3004"Thin LiquidMIL-S-15204Pipe, Aluminum, Brass, Bronze, Cast Iron, Concrete, Iron, Metal, Stainless Steel, Steel, Tin, Titanium, Galvanized Iron, Galvanized SteelBrown1959A1010000000
    555032Can10 sec.25,0005,000-401,5006"PasteMIL-S-15204Aluminum, Brass, Bronze, Cast Iron, Concrete, Iron, Metal, Stainless Steel, Steel, Tin, Titanium, Galvanized Iron, Galvanized SteelBrown1959A102000000
     
    High Locking Strength
     
    Heat Cure Sealants
    32Can15 min.410,0002,000-3101,5002"Thick LiquidMIL-S-15204ABS, Aluminum, Brass, Bronze, Cast Iron, Copper, CPVC, PETG, PVC, PVDF, Stainless Steel, SteelBlackLos Angeles County, CA; Orange County, CA; Riverside County, CA; San Bernardino County, CA1959A31000000
     

    Thread Sealants for Oxygen Systems

    Image of Product. Front orientation. Thread Sealants. Thread Sealants for Oxygen Systems, Jar.

    Jar

    Completely free of oil and chemically inert, these sealants are safe to use with wet and dry oxygen systems. They contain PTFE, which provides a slippery surface that keeps threads from binding. These sealants are non-hardening, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools.
    Container
    Max.
    Pressure, psi
    Temp.,
    ° F
    Size, fl.
    oz.
    Type
    For
    Fluids
    For
    Gases
    Min.
    Max.
    Max. Temp.
    for Oxygen, ° F
    For Max.
    Thread Dia.
    Consistency
    Certification
    Mil. Spec.
    Color
    Each
    Low Locking Strength
    3.5Jar10,00010,000-4505501406"PasteMil. Spec.MIL-PRF-27617Green4538K60000000
     

    Thread Sealant Tape for Stainless Steel Threads

    Image of Product. Front orientation. Thread Sealants. Thread Sealant Tape for Stainless Steel Threads.
    This tape is thicker to prevent seizing and galling associated with stainless steel threaded connections. It’s also good for use with other metals. This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.
    Max.
    Pressure, psi
    Each
    Wd.
    Lg.,
    ft.
    Density,
    g/cm³
    For
    Fluids
    For
    Gases
    Temp. Range,
    ° F
    For Max.
    Thread Dia.
    Certification
    Mil. Spec.
    Color
    1-11
    12-Up
    PTFE
     
    0.0043" Thick
    1/4"431.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N110000000000
    3/8"431.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N1200000000
    1/2"211.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N1700000000
    1/2"501.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N130000000000
    3/4"211.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N1400000000
    1"211.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N1800000000
    1"431.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N150000000000
    1 1/2"431.0510,00010,000-450 to 5501 1/2"Mil. Spec.
    UL Listed
    MIL-T-27730Gray1726N160000000000
     

    Non-Hardening Thread Sealants

    Image of Product. Front orientation. Thread Sealants. Non-Hardening Thread Sealants, Applicator-Top Can.
    Image of Product. Front orientation. Thread Sealants. Non-Hardening Thread Sealants, Applicator-Top Bottle.

    Applicator-Top Can

    Applicator-Top

    Bottle

    Often used in high-vibration applications that could cause standard thread sealants to fail, these never fully harden and remain pliable enough to self-heal and stop leaks before they start. Formulated without PTFE, these sealants are less slippery and less likely to result in overtightenting than sealants that have PTFE, making them good for plastic pipe where overtightening could lead to cracks and breaks. They have low locking strength, so they can be adjusted without tools.
    Container
    Max.
    Pressure, psi
    Temp.,
    ° F
    Size, fl.
    oz.
    Type
    For
    Fluids
    For
    Gases
    Min.
    Max.
    For Max.
    Thread Dia.
    Consistency
    Certification
    Mil. Spec.
    Color
    Each
    Low Locking Strength
    2Applicator-Top Bottle10,000300-654502"PasteMil. Spec.
    UL Recognized Component
    MIL-S-15204Gray4586K11000000
    8Applicator-Top Can10,000300-654502"PasteMil. Spec.
    UL Recognized Component
    MIL-S-15204Gray4586K1200000
     

    Choose-a-Color High-Density Thread Sealant Tape

    Image of Product. Front orientation. Thread Sealants. Choose-a-Color High-Density Thread Sealant Tape.
    Use color to identify water, gas, and chemical connections. This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.
    Green—Green tape is often used for oxygen.
    Orange and Yellow—Orange and yellow tape is commonly used to indicate fuel and gas.
    Red—Red tape is often used for water.
    Max.
    Pressure, psi
    Each
    Wd.
    Lg.,
    yd.
    Density,
    g/cm³
    For
    Fluids
    For
    Gases
    Temp. Range,
    ° F
    For Max.
    Thread Dia.
    Specs. Met
    Certification
    Mil. Spec.
    Choose a Color
    1-11
    12-Up
    PTFE
     
    0.0032" Thick
    1/4"141.210,00010,000-450 to 5501/2"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K110000000000
    3/8"141.210,00010,000-450 to 5503/4"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K1700000000
    1/2"141.210,00010,000-450 to 5501"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K1200000000
    3/4"141.210,00010,000-450 to 5501 1/2"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K1300000000
    1"141.210,00010,000-450 to 5502"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K14000000000
    1 1/2"141.210,00010,000-450 to 5503"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K150000000000
    2"141.210,00010,000-450 to 5504"Fed. Spec. A-A-58092 Type IIMil. Spec.
    UL Listed
    MIL-T-27730
    Green
    ,
    Orange
    ,
    Red
    ,
    Yellow
    44945K160000000000
     

    Thread Sealants

    Image of Product. Front orientation. Thread Sealants. Thread Sealants, Tube.

    Tube

    These thread sealants are anaerobic, so they don’t begin to harden until coated surfaces are threaded together, blocking exposure to air.
    Medium Locking Strength—Sealants with medium locking strength prevent threads from loosening due to vibration and shock. They require a hand tool to unthread.
    NSF/ANSI 61—To adhere to safety standards for drinking water systems, use sealants that meet NSF/ANSI 61.
    Container
    Max.
    Pressure, psi
    Temp.,
    ° F
    Size, fl.
    oz.
    Type
    Begins to
    Harden, min.
    Reaches Full
    Strength, hr.
    For
    Fluids
    For
    Gases
    Min.
    Max.
    For Max.
    Thread Dia.
    Consistency
    Food Industry
    Std.
    Certification
    Mil. Spec.
    Color
    Each
    Medium Locking Strength
    1.7Tube102410,000300-654002"PasteNSF/ANSI 61
    Mil. Spec.
    UL Listed
    MIL-S-15204White45855K86000000
    8.4Tube102410,000300-654002"PasteNSF/ANSI 61
    Mil. Spec.
    UL Listed
    MIL-S-15204White45855K8700000
     

    Thread Sealant Tape

    Image of Product. Front orientation. Thread Sealants. Thread Sealant Tape.
    Made of PTFE, this tape has a slippery surface that keeps threads from binding to make parts easy to assemble.
    Max.
    Pressure, psi
    Each
    Wd.
    Lg.,
    yd.
    Density,
    g/cm³
    For
    Fluids
    For
    Gases
    Temp. Range,
    ° F
    For Max.
    Thread Dia.
    Food Industry Std.
    Certification
    Mil. Spec.
    Color
    1-11
    12-Up
    PTFE
     
    0.0032" Thick
    1/4"140.710,00010,000-450 to 5501/2"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K110000000000
    3/8"140.710,00010,000-450 to 5503/4"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K1800000000
    1/2"140.710,00010,000-450 to 5501"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K1200000000
    3/4"140.710,00010,000-450 to 5501 1/2"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K1300000000
    1"140.710,00010,000-450 to 5502"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K1400000000
    1 1/2"140.710,00010,000-450 to 5503"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K1500000000
    2"140.710,00010,000-450 to 5504"FDA Compliant 21 CFR 177.1550
    Mil. Spec.
    UL Listed
    MIL-T-27730White6802K160000000000
     

    Thread Sealant Tape for Copper, Brass, and Bronze Threads

    Image of Product. Front orientation. Thread Sealants. Thread Sealant Tape for Copper, Brass, and Bronze Threads.
    With 10% copper flake content, this tape matches the color of copper, brass, and bronze threads for a seamless finish. It’s made of PTFE, so it has a slippery surface to keep threads from binding. This tape has a higher density than standard tape for a better seal between threads.
    Max.
    Pressure, psi
    Wd.
    Lg.,
    ft.
    Density,
    g/cm³
    For
    Fluids
    For
    Gases
    Temp. Range,
    ° F
    For Max.
    Thread Dia.
    Certification
    Mil. Spec.
    Color
    Each
    Copper-Filled PTFE
     
    0.0045" Thick
    1/2"501.610,000300-450 to 5001 1/2"Mil. Spec.MIL-T-27730Copper4840N11000000
    3/4"501.610,000300-450 to 5004"Mil. Spec.MIL-T-27730Copper4840N1200000
     
    back to top