Loctite Thread Sealants

Threadsealing with Loctite®

Loctite® liquid thread sealants seal and secure metal pipes and fitting, the space between threaded metal parts, and hardening to prevent leakage.  Designed for low and high pressure applications, liquid thread sealants seal instantly for low pressure testing. When fully cured, they seal to the burst strength of most piping systems.

The new innovative semi-solid stick formula offers added convenience and portability for general maintenance and hard to reach applications.

To purchase Loctite Threadsealing products, call us at
(716) 759-3344 or email us today.


Loctite Variety Formulated for Notes
564 THREAD SEALANT General Purpose Cures rapidly to provide immediate low pressure sealing. Its lower strength allows easy disassembly, and is recommended even on larger (>2”) diameter pipes.  Protects mated threaded areas from rust and corrosion.
566 THREAD SEALANT Controlled Strength Formulated specifically for metal, tapered pipe thread fittings, this product cures rapidly to provide immediate low pressure sealing. Controlled lubricity prevents galling and protects from rust and corrosion. Can be used on fittings up to 2” (50mm) in diameter.
577 THREAD SEALANT Coarse Threads Medium strength, general purpose sealant for use on coarse, threaded components.
579 THREAD SEALANT Instant Seal A general purpose pipe sealant that cures into a resistant plastic. Excellent solvent resistance and withstands temperatures to 300°F (149°C). Sealing is effective on threaded joints up to 2" in diameter.


Loctite Variety Formulated for Notes
567 PST THREAD SEALANT High Temperature This product has excellent solvent resistance, allow easy assemble, prevents galling, and call withstand temperatures up to 400°F. Excellent for high pressure applications, it locks and seals tapered metal, pipe threads and fittings. Ideal for stainless steel, aluminum. galvanized metal, and other inert metals. Disassembles with hand tools.
592 PST THREAD SEALANT Slow Cure Locks seals and threaded fittings. Parts may be repositioned up to 24 hours after application.


Loctite Variety Formulated for Notes
542 THREAD SEALANT Fine Threads A liquid sealant recommended for sealing the fine threads of hydraulic and pneumatic connectors.
545 THREAD SEALANT Hydraulic/Pneumatic Fittings Contains no fillers or particles which could contaminate system fluids, foul valves, or clog fine filters and screens.  Suitable for fittings up to 2” (50 mm) in diameter. Excellent solvent resistance.
569 THREAD SEALANT Hydraulic Fittings Low viscosity original hydraulic sealant.  Designed for sealing fine threaded hydraulic fittings. Contains no fillers and has good chemical resistance.


Loctite Variety Formulated for Notes
580 PST THREAD SEALANT Low Sulfur For threaded fittings in fossil fuel, solar and hydro plant piping systems.
5772 THREAD SEALANT Low Sulfur A medium strength thread sealant with fast curing properties. Especially developed for use on sensitive metals, like Titanium, used in the Nuclear Industry. Parts can be separated using hand tools.


Loctite Variety Formulated for Notes
560 THREAD SEALANT Low Strength Designed for sealing of metal pipes and fittings.  This product seals instantly for low pressure testing.  It can be easily removed on large pipe assemblies.
572 THREAD SEALANT Low Strength Low strength sealant with moderate fixture speed for use on course threads.


Loctite Variety Formulated for Notes
554 THREAD SEALANT Refrigerant Sealant Excellent solvent resistance on threaded fittings and pipes up to 3” in diameter.  Recommended for refrigeration systems and service with aggressive chemicals.
571 THREAD SEALANT Chemical Resistance Medium strength thread sealant designed for locking and sealing against corrosive products.  Shows excellent strength after long exposures to many chemicals.


Loctite Variety Notes
561 QUICKSTIX PST PIPE SEALANT New, patented, semi-solid stick formula offers added convenience and portability. Like Loctite 565™ PST®, this product has immediate low pressure sealing, eases disassembly, and will not contaminate or clog lines.  The semi-solid formula also means it won’t spill or leak, making it great for overhead applications or carrying in a pocket or toolbox.


Loctite Variety Notes
TIGHT MULTI-PURPOSE ANAEROBIC GEL This product seals, locks, and retains. It seals against most liquids and gases and works well on course threads, large gaps, and all overhead applications.


Loctite Variety Notes
THREAD SEALANT WITH PTFE A general purpose sealant with the added lubricity of PTFE for metal pipes. Won't shred like tape and allows easy disassembly. Resists common shop fluids.
PIPE JOINT COMPOUND Economical, general purpose pipe thread sealant that will not shred like tape and allows easy disassembly. Resists common shop fluids.
NO MORE LEAKS PLASTIC PIPE SEALANT Seals plastic pipes and allows easy disassembly. Specially formulated without the added lubricity of PTFE to avoid typical cracks when plastic joints are tightened.
H.V.A.C. BLUE PIPE JOINT COMPOUND Tough, pliable sealant specially formulated for heating, air conditioning, and refrigeration applications. Sets up quickly for immediate assembly and to keep joints tight in areas of high vibration and thermal cycling. Seals oils, refrigerants, butane, propane, natural gas, and more. Easy cleanup.


Loctite Variety Notes
THREAD SEAL TAPE WITH PTFE ½" x 520" tape with plastic spool and shell. Can be used in applications with temperatures up to 500°F. Oxygen service compatible.
55 PIPE SEALING CORD A general purpose threaded pipe and fitting sealant.  A non-curing, coated multifilament cord that seals out air and other common gases and fluids. Recommended for sealing metal and plastic tapered pipe fittings up to 4" NPT. Allows for post assembly adjustments.