Thread Sealant

Thread sealant for pipe joints and threaded fittings.

LOCTITE 248 Blue Anaerobic Threadlocker Glue Stick, 9g (0.32 oz) Sealing Adhesive - Medium-Strength No-Drip General Purpose Metal Bonding Repair Glue for Hardware & Tools
Free shipping

LOCTITE 248 Blue Anaerobic Threadlocker Glue Stick, 9g (0.32 oz) Sealing Adhesive - Medium-Strength No-Drip General Purpose Metal Bonding Repair Glue for Hardware & Tools

8 sold
$137.79
Thread Locker Blue and Red, Medium and Strength Thread Lock, Threadlocker for Nuts, , Fasteners and Metals, Anaerobic Curing Screw Glue to Loosening and (Blue and Red)
Free shipping

Thread Locker Blue and Red, Medium and Strength Thread Lock, Threadlocker for Nuts, , Fasteners and Metals, Anaerobic Curing Screw Glue to Loosening and (Blue and Red)

5.06 sold
-38%$17.34$27.97
6 Rolls Plumbers Tape, Teflon Tape, PTFE Thread Seal Tape, High-Density Thread Sealant, for Shower , Water Pipes (1/2 in X 394 in)
Free shipping

6 Rolls Plumbers Tape, Teflon Tape, PTFE Thread Seal Tape, High-Density Thread Sealant, for Shower , Water Pipes (1/2 in X 394 in)

4.813 sold
$6.67
Rectorseal 4 Oz No. 5 Pipe Thread Sealant 25631
Free shipping

Rectorseal 4 Oz No. 5 Pipe Thread Sealant 25631

1 sold
$27.53
212 MAIN Mill Rose 0.5 pt Lead-Free Thread Sealant - Slow-Drying, Grit-Free, Easy Clean-Up, Soft-Setting, Non-Hardening, Non-Toxic for Home Improvement, Assembly Line Work - Pipe Sealing for All Metal Threads
Free shipping

212 MAIN Mill Rose 0.5 pt Lead-Free Thread Sealant - Slow-Drying, Grit-Free, Easy Clean-Up, Soft-Setting, Non-Hardening, Non-Toxic for Home Improvement, Assembly Line Work - Pipe Sealing for All Metal Threads

1 sold
$26.59
Homonth Automotive Thread Lock Sealant, Automotive Special Anti-Thread Lock Nut Bolt Rust Sealant

Homonth Automotive Thread Lock Sealant, Automotive Special Anti-Thread Lock Nut Bolt Rust Sealant

2 sold
-45%$9.89$17.98
6 Rolls Plumbers Tape, Tape, Thread Seal Tape, High-Density Thread Sealant, for Shower , Water (1/2 in X 394 in)
Free shipping

6 Rolls Plumbers Tape, Tape, Thread Seal Tape, High-Density Thread Sealant, for Shower , Water (1/2 in X 394 in)

$10.37
Powerful Red Thread Adhesive Glue, a Sealant for Metal Fasteners to Stop Them from Becoming Loose

Powerful Red Thread Adhesive Glue, a Sealant for Metal Fasteners to Stop Them from Becoming Loose

1 sold
$4.50
Supr-Safe Gas Appliance Connector Kit + Rectorseal Pipe Thread Sealant
Free shipping

Supr-Safe Gas Appliance Connector Kit + Rectorseal Pipe Thread Sealant

Limited time deal
$57.95
212 MAIN Oatey 15620 Hercules Real Tuff PTFE-Based Thread Sealant Paste - .50 pt (0.94 lbs), Brush-Applied, Leak-Proofing, Soft Set, 12,000 psi Hydraulic, 2,600 psi Gas, Anti-Galling, Acid-Alkali Resistant, for Metal Applications
Free shipping

212 MAIN Oatey 15620 Hercules Real Tuff PTFE-Based Thread Sealant Paste - .50 pt (0.94 lbs), Brush-Applied, Leak-Proofing, Soft Set, 12,000 psi Hydraulic, 2,600 psi Gas, Anti-Galling, Acid-Alkali Resistant, for Metal Applications

$31.69
30 Rolls Thread Seal Tapes, Teflon Tape 1/2 Pipe Sealant Tape Industrial Thread Sealants Plumbers Thread Tape for Leak Water, Plumbers, Plumbing, Air , Thread Pipe, 1/2" x394" White
Free shipping

30 Rolls Thread Seal Tapes, Teflon Tape 1/2 Pipe Sealant Tape Industrial Thread Sealants Plumbers Thread Tape for Leak Water, Plumbers, Plumbing, Air , Thread Pipe, 1/2" x394" White

$22.66
Loctite 277 Series High-Strength Red Threadlocker Adhesive - 10 ml Dimethacrylate Ester Liquid, Solid Formula, Prevents Fasteners From Loosening, Seals Thread Gaps, Protects Against Rust & Corrosion
Free shipping

Loctite 277 Series High-Strength Red Threadlocker Adhesive - 10 ml Dimethacrylate Ester Liquid, Solid Formula, Prevents Fasteners From Loosening, Seals Thread Gaps, Protects Against Rust & Corrosion

$37.11
Permatex Pneumatic & Hydraulic Thread Sealant - 36 ml Carded Bottle, Multipurpose Use, Corrosion Protection, Servomechanism Compatibility, Temperature Cycling Resistant, Vibration-Resistant, Extreme Pressure-Ready, Fine-Filtration System Compatible
Free shipping

Permatex Pneumatic & Hydraulic Thread Sealant - 36 ml Carded Bottle, Multipurpose Use, Corrosion Protection, Servomechanism Compatibility, Temperature Cycling Resistant, Vibration-Resistant, Extreme Pressure-Ready, Fine-Filtration System Compatible

$46.18
Permatex 565 Non-Stick Thread Sealant - Multi-Purpose Adhesive for Home Improvement, Roofing Applications (Seals Threads)
Free shipping

Permatex 565 Non-Stick Thread Sealant - Multi-Purpose Adhesive for Home Improvement, Roofing Applications (Seals Threads)

$27.77
Rectorseal Tru-Blu Pipe Thread Sealant (622-31431 Model) - 1 US Pint (473 ml) BTC, Fiberglass Reinforced Positive Lock for Threaded Fasteners, Compatible with Iron, Copper, CPVC, Galvanized Steel, Aluminum, Brass Pipes (Home Improvement Building Supplies)
Free shipping

Rectorseal Tru-Blu Pipe Thread Sealant (622-31431 Model) - 1 US Pint (473 ml) BTC, Fiberglass Reinforced Positive Lock for Threaded Fasteners, Compatible with Iron, Copper, CPVC, Galvanized Steel, Aluminum, Brass Pipes (Home Improvement Building Supplies)

$37.63
Loctite 569 Metal-Safe High Strength Hydraulic Thread Sealant, Brown, 250ml, -65°F to +300°F Extreme Temps, 0.68 lbs, 24 Hr Cure Time, 24 PSI Tensile Strength, Seals Threads, Great Performance, Home Improvement Building Supplies
Free shipping

Loctite 569 Metal-Safe High Strength Hydraulic Thread Sealant, Brown, 250ml, -65°F to +300°F Extreme Temps, 0.68 lbs, 24 Hr Cure Time, 24 PSI Tensile Strength, Seals Threads, Great Performance, Home Improvement Building Supplies

$237.08
Yellow Gas Pipe Thread Sealant Tape - Pack of 1-260" Length 1/2" Width Thread Seal Tape - for , Gas, and
Free shipping

Yellow Gas Pipe Thread Sealant Tape - Pack of 1-260" Length 1/2" Width Thread Seal Tape - for , Gas, and

$16.62
Loctite 442-29021 Anaerobic Acrylic Threadlocker - 10ml Vial, Medium Grade, Wicking Formula (12.0 cp), 6 min 77 f Set Time, 24 h 77 f Cure, 25 in lb Torque, Penetrates, Seals Threads, Corrosion Resistant (Home Improvement Building Supplies)
Free shipping

Loctite 442-29021 Anaerobic Acrylic Threadlocker - 10ml Vial, Medium Grade, Wicking Formula (12.0 cp), 6 min 77 f Set Time, 24 h 77 f Cure, 25 in lb Torque, Penetrates, Seals Threads, Corrosion Resistant (Home Improvement Building Supplies)

$36.91
Oatey Blue Formula Thread Sealant, 4 oz Durable Waterproof Liquid Leak Repair Adhesive for ABS, CPVC Plastics & Drinking Water Lines, 12,000 psi Hydraulic Resistance, 2,600 psi Gas Pressure
Free shipping

Oatey Blue Formula Thread Sealant, 4 oz Durable Waterproof Liquid Leak Repair Adhesive for ABS, CPVC Plastics & Drinking Water Lines, 12,000 psi Hydraulic Resistance, 2,600 psi Gas Pressure

$25.93
Loctite 37615 High-Quality PST Thread Sealant Stick, 0.832 lbs, Dependable Modern Pipe Sealing Solution for Home Improvement Supplies
Free shipping

Loctite 37615 High-Quality PST Thread Sealant Stick, 0.832 lbs, Dependable Modern Pipe Sealing Solution for Home Improvement Supplies

$38.60
10 ml x 4 Pack Thread Lock (Red & Blue) for Automotive Components, Fast-Curing Sealant with Medium & Strong Strength, Leakproof Seals, Long-Lasting Bond, Precision-Engineered Nozzle for Nuts, Bolts, Metals, Household Repairs

10 ml x 4 Pack Thread Lock (Red & Blue) for Automotive Components, Fast-Curing Sealant with Medium & Strong Strength, Leakproof Seals, Long-Lasting Bond, Precision-Engineered Nozzle for Nuts, Bolts, Metals, Household Repairs

2 sold
$10.99
Permatex Blue Medium Strength Automotive Grade Threadlocker, 6 ml Removable Locking Adhesive (1/4"-1" Fasteners) with Corrosion Protection, Vibration Resistance, OEM Specified (Home Improvement, Building Supplies)
Free shipping

Permatex Blue Medium Strength Automotive Grade Threadlocker, 6 ml Removable Locking Adhesive (1/4"-1" Fasteners) with Corrosion Protection, Vibration Resistance, OEM Specified (Home Improvement, Building Supplies)

$27.44
212 MAIN Blue Monster 4000284 PTFE-Based Pipe Thread Sealant - 8 oz White High-Pressure Sealant for Home Improvement, Building Supplies, Pipe Sealing
Free shipping

212 MAIN Blue Monster 4000284 PTFE-Based Pipe Thread Sealant - 8 oz White High-Pressure Sealant for Home Improvement, Building Supplies, Pipe Sealing

$28.97
Loctite Red Refrigerant Thread Sealer - 10 ml, for 3" Diameter Pipes & Threaded Fittings, 24h Cure Time, Solvent Resistant
Free shipping

Loctite Red Refrigerant Thread Sealer - 10 ml, for 3" Diameter Pipes & Threaded Fittings, 24h Cure Time, Solvent Resistant

$37.46
Permatex PTX59214 High Temperature Thread Sealant - 6 ml Carded Tube, Long Lasting Adhesive, Fixtures Cured in 4 Hours, Prevents & Protects Against Corrosion, Repositionable Parts
Free shipping

Permatex PTX59214 High Temperature Thread Sealant - 6 ml Carded Tube, Long Lasting Adhesive, Fixtures Cured in 4 Hours, Prevents & Protects Against Corrosion, Repositionable Parts

$16.27
Harvey 030005-144 Pipe Thread Stick - 1.25 Oz. Pipe Joint Sealant for Automotive & Motorcycle Car Repair Assembly Disassembly Tools
Free shipping

Harvey 030005-144 Pipe Thread Stick - 1.25 Oz. Pipe Joint Sealant for Automotive & Motorcycle Car Repair Assembly Disassembly Tools

$12.18
Surj Selection X Homonth Automotive Thread Lock Sealant, Automotive Special Anti-Thread Lock Nut Bolt Rust Sealant,car,foam,cleaner,built-in,filter,,tough,grease,,care,upgraded,formula,,commercial,use,,multipurpo,Nitrite,Pho,High-Density,Fog,Machine Fluid

Surj Selection X Homonth Automotive Thread Lock Sealant, Automotive Special Anti-Thread Lock Nut Bolt Rust Sealant,car,foam,cleaner,built-in,filter,,tough,grease,,care,upgraded,formula,,commercial,use,,multipurpo,Nitrite,Pho,High-Density,Fog,Machine Fluid

$14.92
Loctite 38650 Heavy-Duty Copper Base Anti-Seize Brush-On Thread Protector Bottle, 8 oz (226.8 g) Liquid - 1800°F High-Temp Nickel (Soluble Compounds) Formula, Automotive Tool for Mechanics, Rust-Resist Coat for Exhaust Bolts, Brake Systems Safe
Free shipping

Loctite 38650 Heavy-Duty Copper Base Anti-Seize Brush-On Thread Protector Bottle, 8 oz (226.8 g) Liquid - 1800°F High-Temp Nickel (Soluble Compounds) Formula, Automotive Tool for Mechanics, Rust-Resist Coat for Exhaust Bolts, Brake Systems Safe

5.023 sold
$17.99
Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack

Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack

2 sold
$9.77
NEW 1/4" Teflon Tape (2-Rolls) for Plumbing - Yellow PTFE Thread Sealant Tape

NEW 1/4" Teflon Tape (2-Rolls) for Plumbing - Yellow PTFE Thread Sealant Tape

5.02 sold
$2.99
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Introduction

Thread sealant creates a leak-resistant barrier on threaded metal or plastic connections. It fills gaps between male and female threads to block liquids and gases.

  • Formula type determines temperature and chemical resistance.
  • Viscosity affects how easily the product spreads on threads.
  • Cure time influences when a joint can be pressurized.

Choose the right thread sealant for your application.

FAQs

Thread sealant is available as paste, tape, or liquid anaerobic compounds. Paste and liquid versions fill irregular threads while tape offers quick, no-mess application.

Most paste and liquid sealants must be cleaned off and reapplied. PTFE tape can often be removed and replaced with fresh tape for the next assembly.

Select high-temperature formulations rated for the expected heat range. Check product specifications for maximum continuous temperature before use on hot water or heating systems.

Many anaerobic liquids and PTFE tapes are safe for plastic. Confirm compatibility with the base material to avoid cracking or chemical damage.

Apply a thin, even layer to the male threads, covering two to three turns. Excess can squeeze into the pipe and restrict flow.