Loctite products are trusted worldwide for reliable bonding, sealing, and equipment maintenance. From industrial adhesives and threadlockers to sealants and repair compounds, Loctite solutions help improve performance, reduce downtime, and ensure long-lasting results across a wide range of applications

Loctite Threadlockers

Loctite Threadlockers are anaerobic adhesives engineered to lock and seal threaded metal fasteners such as nuts, bolts, and studs. They cure in the absence of air between metal threads, forming a strong bond that prevents loosening caused by vibration, shock, and thermal expansion while also protecting against corrosion and leakage.
Key Benefits:
Prevents fastener loosening due to vibration
Seals threads against moisture, oils, and chemicals
Protects against rust and corrosion
Eliminates the need for lock washers and lock nuts
Improves equipment reliability and reduces maintenance
Suitable for both manual and automated assembly
Common Applications
Automotive engines and transmissions
Industrial machinery and equipment
Pumps and compressors
Electric motors
Gearboxes and conveyors
Construction and agricultural machinery
HVAC equipment
Heavy engineering and manufacturing
Popular Loctite Threadlockers:
LOCTITE 222 – Low-strength, ideal for small fasteners requiring easy removal.
LOCTITE 243 – Medium-strength, oil-tolerant, general-purpose threadlocker.
LOCTITE 248 – Medium-strength threadlocker in a convenient stick form.
LOCTITE 262 – High-strength for permanent fastening of large bolts.
LOCTITE 263 – High-strength, oil-tolerant threadlocker.
LOCTITE 270 – High-strength for permanent assemblies.
LOCTITE 271 – High-strength for heavy-duty applications.
LOCTITE 272 – High-temperature resistant threadlocker.
LOCTITE 277 – High-strength for large fasteners.
LOCTITE 290 – Wicking-grade threadlocker for pre-assembled fasteners.
LOCTITE Threadlockers are trusted across automotive, aerospace, manufacturing, mining, rail, marine, and maintenance industries for ensuring secure, vibration-resistant threaded assemblies while extending equipment service life.

Loctite instant adhesives

LOCTITE Instant Adhesives are fast-curing cyanoacrylate adhesives designed to provide strong, reliable bonds on a wide range of materials. They cure within seconds upon contact with moisture on the substrate, making them ideal for high-speed assembly, maintenance, repair, and manufacturing applications.
Key Benefits:
Bonds in seconds for increased productivity
High-strength, durable adhesion
Excellent performance on metals, plastics, rubber, ceramics, wood, and many composites
Available in low, medium, and high-viscosity formulations
Suitable for precision assembly and gap-filling applications
Resistant to vibration, impact, and environmental exposure
Easy to apply with minimal waste
Common Applications:
Rubber and plastic component bonding
Metal part assembly
Electronic device manufacturing
Automotive component assembly
Medical device production
Appliance and consumer product manufacturing
General industrial maintenance and repair
DIY and household repairs
Popular LOCTITE Instant Adhesives:
LOCTITE 401 – General-purpose instant adhesive for porous and acidic substrates.
LOCTITE 406 – Low-viscosity adhesive for plastics and rubber.
LOCTITE 414 – Fast-setting adhesive for close-fitting parts.
LOCTITE 415 – Medium-viscosity adhesive for general industrial use.
LOCTITE 435 – Toughened adhesive with excellent impact resistance.
LOCTITE 480 – Rubber-toughened adhesive for metal-to-metal and metal-to-rubber bonding.
LOCTITE 454 – Non-drip gel adhesive for vertical and overhead applications.
LOCTITE 495 – General-purpose, low-viscosity adhesive for rapid bonding.
LOCTITE Instant Adhesives are trusted across automotive, electronics, medical, aerospace, manufacturing, and maintenance industries for delivering fast, reliable, and long-lasting bonds with minimal downtime.

Loctite Thread Sealants

Loctite Thread Sealants are anaerobic sealing compounds designed to seal and lock threaded metal pipe fittings, preventing leaks caused by gases, liquids, pressure, and vibration. They cure in the absence of air between close-fitting metal threads, creating a durable, pressure-resistant seal without shrinking or cracking.

Key Benefits:

• Provides reliable leak-proof sealing
• Prevents loosening caused by vibration
• Resistant to oils, fuels, water, hydraulic fluids, and many chemicals
• Eliminates the need for PTFE tape and pipe dopes
• Protects threads against corrosion and galling
• Suitable for high-pressure and high-temperature applications
• Easy to apply with clean, consistent results

Common Applications:

• Hydraulic and pneumatic systems
• Compressed air lines
• Fuel and oil pipe connections
• Water and plumbing systems
• Industrial process piping
• HVAC and refrigeration systems
• Pumps, compressors, valves, and fittings
• Manufacturing and maintenance operations

Popular Loctite Thread Sealants:

• LOCTITE 55 – Thread sealing cord for metal and plastic threaded pipes.
• LOCTITE 542 – Hydraulic and pneumatic thread sealant for fine threads.
• LOCTITE 545 – High-performance sealant for hydraulic and pneumatic fittings.
• LOCTITE 567 – General-purpose thread sealant for coarse metal threads.
• LOCTITE 569 – High-strength thread sealant for metal pipe fittings.
• LOCTITE 577 – Universal thread sealant for coarse metal threaded connections.
• LOCTITE 572 – Slow-curing sealant for large metal threaded fittings.
• LOCTITE 5331 – Silicone-based thread sealant for plastic and metal plumbing fittings.

LOCTITE Thread Sealants are widely used in the automotive, industrial, oil and gas, power generation, chemical processing, plumbing, and maintenance industries to ensure long-lasting, leak-free threaded connections while improving system reliability.

Loctite Retaining Compounds are high-strength anaerobic adhesives designed to bond and secure cylindrical metal assemblies such as bearings, bushings, sleeves, gears, pulleys, rotors, and shafts. They cure in the absence of air between close-fitting metal surfaces, creating a durable bond that prevents loosening, fretting, corrosion, and leakage while improving load distribution.
Key Benefits
High-strength retention of cylindrical parts
Prevents vibration-induced loosening
Eliminates fretting and corrosion
Increases load-carrying capacity
Fills gaps between mating metal parts
Reduces machining tolerances and repair costs
Suitable for new assemblies and component repairs
Common Applications
Bearing mounting
Bushing retention
Gear and pulley assembly
Shaft and hub bonding
Rotor and sleeve installation
Repair of worn housings and shafts
Electric motors, pumps, gearboxes, compressors, and industrial machinery
Popular Loctite Retaining Compounds:
LOCTITE 603 – Oil-tolerant bearing retainer
LOCTITE 609 – General-purpose retaining compound
LOCTITE 620 – High-temperature retaining compound
LOCTITE 638 – High-strength, fast-curing retainer
LOCTITE 648 – High-strength retainer for close-fitting parts
LOCTITE 660 – Repair compound for worn shafts and housings
LOCTITE 680 – High-strength, large-gap retaining compound

These products are widely used in automotive, manufacturing, maintenance, power generation, mining, and heavy industrial applications where reliable cylindrical component retention is essential

LOCTITE Metal Putty

LOCTITE Metal Putty is a high-performance epoxy repair compound formulated to rebuild, repair, and restore worn or damaged metal components. Filled with metal particles, these two-part epoxy putties provide excellent adhesion, high compressive strength, and outstanding resistance to abrasion, corrosion, chemicals, and impact. They are ideal for extending the service life of industrial equipment while reducing downtime and replacement costs.

Key Benefits:

• Rebuilds worn, cracked, or damaged metal parts
• Excellent adhesion to steel, cast iron, aluminum, and other metals
• High compressive and mechanical strength
• Resistant to abrasion, corrosion, chemicals, and moisture
• Easy to mix, apply, machine, drill, tap, and sand after curing
• Minimizes equipment downtime and maintenance costs
• Suitable for emergency and preventive repairs

Common Applications:

• Repairing worn shafts, keyways, and bearing housings
• Rebuilding pump casings, impellers, and valve bodies
• Restoring gearbox and motor components
• Repairing cracked castings and machinery bases
• Filling pits, cavities, and damaged metal surfaces
• Maintenance of industrial equipment, mining machinery, and processing plants
• Marine, power generation, and manufacturing equipment repairs

Popular Loctite Metal Putty Products:

• LOCTITE EA 3471 – Steel-filled epoxy for general metal repairs
• LOCTITE EA 3472 – Steel-filled, pourable epoxy for casting and rebuilding
• LOCTITE EA 3473 – Fast-curing steel-filled repair compound
• LOCTITE EA 3474 – Aluminum-filled epoxy for lightweight metal repairs
• LOCTITE EA 3475 – Aluminum-filled repair compound with excellent machinability
• LOCTITE EA 3478 – Superior Wear metal repair putty for abrasion-resistant repairs

LOCTITE Metal Putty products are trusted across industries including manufacturing, mining, cement, power generation, marine, oil & gas, and heavy engineering for reliable metal restoration, equipment maintenance, and long-lasting performance.

LOCTITE Silicone Rubber Bonding Adhesives are high-performance RTV (Room Temperature Vulcanizing) silicone adhesives and sealants designed to bond, seal, and protect silicone rubber and a wide range of other materials. They cure at room temperature to form a flexible, durable, and weather-resistant elastomer, making them ideal for applications requiring excellent flexibility, vibration resistance, and long-term environmental protection.

Key Benefits:

• Strong, flexible bond with excellent elasticity
• Outstanding resistance to moisture, UV light, ozone, and weathering
• Withstands high and low temperature extremes
• Excellent resistance to vibration and thermal cycling
• Suitable for sealing, gasketing, and bonding applications
• Adheres to silicone rubber, glass, ceramics, metals, and many plastics
• Available in non-corrosive and sensor-safe formulations

Common Applications:

• Bonding silicone rubber components
• Forming and repairing gaskets
• Sealing electrical and electronic enclosures
• Automotive engine and transmission sealing
• HVAC and industrial equipment assembly
• Appliance manufacturing and maintenance
• Waterproof sealing of joints and housings
• General industrial maintenance and repair

Popular Loctite Silicone Adhesives:

• LOCTITE SI 595 – General-purpose RTV silicone sealant
• LOCTITE SI 5910 – Low-odor, flexible flange sealant
• LOCTITE SI 5920 – Copper RTV silicone for high-temperature applications
• LOCTITE SI 5699 – Flexible, waterproof silicone adhesive and sealant
• LOCTITE SI 5980 – Black RTV silicone for automotive gasketing
• LOCTITE SI 5990 – Premium black RTV silicone with excellent oil resistance

LOCTITE Silicone Rubber Bonding Adhesives are widely used in the automotive, electronics, industrial manufacturing, HVAC, marine, and maintenance sectors where flexible, durable, and weather-resistant bonding and sealing are required.

Loctite Pipe Sealing Cord

LOCTITE Pipe Sealing Cord is a high-performance, multi-filament sealing cord designed to create instant, reliable seals on threaded metal and plastic pipe fittings. Unlike traditional PTFE tape or pipe compounds, it provides a clean, easy-to-apply solution that allows fittings to be adjusted after assembly while maintaining a leak-proof seal. It is ideal for plumbing, industrial maintenance, gas, water, and compressed air systems.

Key Benefits:

• Provides an instant, leak-proof seal
• Suitable for both metal and plastic threaded fittings
• Allows fittings to be repositioned after assembly
• Easy, clean, and quick to apply
• Resistant to water, gas, oils, fuels, and many chemicals
• Eliminates the mess associated with liquid sealants and PTFE tape
• Certified for a wide range of plumbing and industrial applications

Common Applications:

• Water supply systems
• Gas pipeline connections
• Compressed air systems
• Hydraulic and pneumatic fittings
• Industrial process piping
• Plumbing and HVAC installations
• Maintenance, repair, and assembly of threaded pipe joints

Popular Loctite Pipe Sealing Cord:

• LOCTITE 55 – Multi-purpose pipe sealing cord for sealing threaded metal and plastic pipe connections. It provides an immediate seal and allows easy adjustment of fittings without compromising sealing performance.

Industries Served:

• Plumbing
• HVAC
• Industrial manufacturing
• Oil & gas
• Water treatment
• Chemical processing
• Marine
• General maintenance and repair

LOCTITE Pipe Sealing Cord, especially LOCTITE 55, is trusted by professionals worldwide for creating fast, reliable, and long-lasting seals on threaded pipe connections while reducing installation time and maintenance costs.

Loctite Rubber Adhesives

Loctite Rubber Adhesives are high-performance industrial adhesives specially formulated to bond natural rubber, synthetic rubber, elastomers, and rubber-to-metal, rubber-to-plastic, and rubber-to-ceramic assemblies. These fast-curing adhesives provide strong, durable bonds with excellent resistance to impact, vibration, moisture, oils, and environmental exposure, making them ideal for manufacturing, maintenance, and repair applications.

Key Benefits:

• Fast curing for increased production efficiency
• High-strength, long-lasting bonds
• Excellent adhesion to rubber, metal, plastics, ceramics, and composites
• Resistant to vibration, impact, moisture, oils, and many chemicals
• Available in low, medium, and high-viscosity formulations
• Suitable for precision assembly and industrial repairs
• Reliable performance in demanding environments

Common Applications:

• Bonding rubber seals and gaskets
• O-rings and elastomer components
• Rubber-to-metal assemblies
• Rubber-to-plastic bonding
• Automotive weatherstrips and trim
• Conveyor belts and industrial rubber parts
• Appliance and electronic component assembly
• General industrial maintenance and repair

Popular Loctite Rubber Adhesives

• LOCTITE 406 – Low-viscosity instant adhesive designed for bonding rubber and plastics.
• LOCTITE 401 – General-purpose cyanoacrylate suitable for rubber, wood, leather, and porous materials.
• LOCTITE 480 – Rubber-toughened instant adhesive offering excellent impact and peel resistance.
• LOCTITE 454 – Non-drip gel adhesive for vertical surfaces and gap-filling applications.
• LOCTITE 495 – Fast-curing, general-purpose instant adhesive for rubber and metal bonding.

Industries Served:

• Automotive
• Electronics
• Medical device manufacturing
• Industrial equipment
• Aerospace
• Consumer products
• Maintenance, Repair & Operations (MRO)

LOCTITE Rubber Adhesives are trusted by manufacturers and maintenance professionals worldwide for delivering fast, reliable, and durable rubber bonding solutions across a wide range of industrial and commercial applications.

Loctite Product Summary

Loctite 222 – Low-strength threadlocker – small screws, electronics, instruments
Loctite 242 – Medium-strength threadlocker – Nuts and bolts requiring normal servicing
Loctite 243 – Oil-tolerant medium-strength threadlocker – Automotive and industrial fasteners
Loctite 262 – High-strength threadlocker – Permanent locking of large fasteners
Loctite 270 – High-strength threadlocker – Heavy-duty machinery and equipment
Loctite 271 – High-strength threadlocker – Studs, bolts, and vibration-resistant assemblies
Loctite 290 – Wicking threadlocker – Locks pre-assembled fasteners without disassembly
Loctite 510 – High-temperature flange sealant – Rigid metal flanges, gearboxes, pumps
Loctite 515 – Flange sealant – Machined metal flange sealing
Loctite 518 – Anaerobic flange sealant – Flexible machined flange sealing
Loctite 574 – Flange sealant -Transmission housings and engine flanges
Loctite SI 5910 – Silicone gasket maker – Engine covers, oil pans, water pumps
Loctite 569 – Silicone sealant – General-purpose automotive gasket sealing
Loctite 55 – Thread sealing cord – Metal and plastic threaded pipe fittings
Loctite 567 – Thread sealant – Metal pipe threads carrying gases and liquids
Loctite 577 – Thread sealant – Coarse metal pipe threads
Loctite 603 – Retaining compound – Bonding bearings, bushes, and sleeves
Loctite 609 – Retaining compound – cylindrical parts with close fits
Loctite 620 – High-temperature retaining compound – Bearings exposed to high temperatures
Loctite 638 – High-strength retaining compound – Shafts, gears, pulleys, and bearings
Loctite 641 – Medium-strength retaining compound – Bearings requiring future removal
Loctite 648 – High-strength retaining compound – Heavy-duty cylindrical assemblies
Loctite 401 – Instant adhesive – General-purpose bonding of metals, rubber, and plastics
Loctite 406 – Instant adhesive – Fast bonding of plastics and rubber
Loctite 454 – Gel instant adhesive – Vertical and overhead applications
Loctite 480 – Toughened instant adhesive – Metal, rubber, and impact-resistant bonding
Loctite 495 – Instant adhesive – Plastics, rubber, and metal bonding
Loctite EA 3450 – Epoxy adhesive – Structural metal bonding and repairs
Loctite EA 3478 – Metal repair epoxy – Worn metal surface rebuilding and repair
Loctite PC 7227 – Wear-resistant coating – Abrasion protection for industrial equipment
Loctite SF 7063 – Cleaner & degreaser – Surface preparation before bonding
Loctite SF 7649 – Primer/Activator – Speeds curing of anaerobic adhesives
Loctite LB 8008 – Anti-seize lubricant – Prevents thread seizure and corrosion
Loctite LB 8012 – Moly dry lubricant – Lubrication for moving parts under heavy loads

Loctite Main Product Categories

Threadlockers – Prevent nuts and bolts from loosening due to vibration.
Thread Sealants – Seal threaded pipe connections against leaks.
Retaining Compounds – Secure bearings, bushes, gears, and cylindrical assemblies.
Flange Sealants – Replace conventional gaskets on machined metal flanges.
Instant Adhesives (Cyanoacrylates) – Fast bonding for plastics, rubber, metals, wood, and ceramics.
Epoxy Adhesives & Metal Repair Compounds – Structural bonding and metal restoration.
Silicone Sealants – Flexible sealing and gasket making.
Cleaners, Primers & Lubricants – Surface preparation, curing acceleration, and maintenance.

Loctite – Frequently Asked Questions (FAQs)

1. What are Loctite products used for?
   Loctite products are used for industrial assembly, maintenance, repair, and manufacturing. The range includes threadlockers, retaining compounds, instant adhesives, sealants, gasketing products, structural adhesives, and metal repair compounds.
2. What is the difference between Loctite Threadlocker and Retaining Compound?
   Threadlockers prevent threaded fasteners such as nuts and bolts from loosening due to vibration. Retaining compounds secure cylindrical parts like bearings, bushes, sleeves, gears, and shafts.
3. Which Loctite threadlocker should I choose?
   Purple (222): Low strength for small fasteners.
   Blue (242, 243): Medium strength, removable with standard tools.
   Red (262, 263, 270, 271): High strength for permanent assemblies.
   Green (290): Wicking grade for pre-assembled fasteners.
4. How long does Loctite take to cure?
   Most Loctite anaerobic adhesives achieve handling strength in 10–30 minutes and fully cure within 24 hours, depending on the product, materials, and temperature.
5. Can Loctite be used on stainless steel?
   Yes. However, stainless steel is less reactive, so using a primer or activator may improve curing speed.
6. Can Loctite bond plastic or rubber?
   Yes. Instant adhesives such as Loctite 406 are designed for bonding plastics and rubber. Difficult plastics like polyethylene (PE) and polypropylene (PP) typically require a compatible primer.
7. What is the difference between Loctite 242 and 243?
   Loctite 243 is oil-tolerant and provides reliable performance on slightly contaminated fasteners, while Loctite 242 is intended for clean metal surfaces.
8. Can I remove a high-strength Loctite threadlocker?
   Yes. High-strength grades can usually be removed by applying heat (around 250°C) and then using appropriate tools.
9. What surfaces should be cleaned before applying Loctite?
   For the best results, remove oil, grease, dirt, and moisture from bonding surfaces before application.
10. Are Loctite products resistant to chemicals?
    Many Loctite products offer excellent resistance to oils, fuels, water, coolants, and a wide range of industrial chemicals after full cure.
11. Can Loctite be used outdoors?
    Yes. Many Loctite adhesives and sealants provide good resistance to moisture, weather, and temperature variations.
12. What temperature can Loctite products withstand?
    Temperature resistance varies by product. Standard threadlockers generally withstand up to 150°C, while specialty grades and high-temperature sealants can tolerate much higher temperatures.
13. Can Loctite fill large gaps?
    Gap-filling capability depends on the product. Retaining compounds and metal repair products are designed to fill larger gaps than standard threadlockers.
14. What is the shelf life of Loctite products?
    Most unopened Loctite products have a shelf life of 12–24 months when stored according to the manufacturer’s recommendations.
15. How should Loctite products be stored?
    Store them in their original, tightly closed containers in a cool, dry place away from direct sunlight and excessive heat.
16. Are Loctite products suitable for industrial maintenance?
    Yes. Loctite products are widely used in manufacturing plants, automotive workshops, power generation, mining, construction, food processing, and general industrial maintenance.
17. Can Loctite replace welding or mechanical fasteners?
    Some Loctite structural adhesives can replace welding, riveting, or mechanical fasteners in suitable applications, reducing weight and improving stress distribution.
18. Are Loctite products available in different package sizes?
    Yes. Many products are available in multiple pack sizes to suit maintenance, workshop, and production requirements.
19. How do I select the right Loctite product?
    Selection depends on the application, substrate material, operating temperature, chemical exposure, gap size, and required bond strength.
20. Where can I buy genuine Loctite products in India?
    Purchase from authorized distributors or trusted industrial adhesive suppliers to ensure genuine products, technical support, and reliable performance.

Contact Us

We’re here to help you find the right adhesive, sealant, or maintenance solution for your application. Whether you need product recommendations, technical assistance, pricing, or bulk order support, our team is ready to assist.