Loctite Industrial Adhesives, Sealants, Retaining compounds & Threadlockers

Loctite adhesives provide industrial adhesive, sealant, and maintenance solutions designed to improve equipment reliability, reduce downtime, and extend component service life.

Key solutions include:

Threadlockers – prevent loosening of threaded fasteners caused by vibration and thermal cycling. Retaining Compounds – secure bearings, bushes, shafts, gears, and cylindrical components.

Thread Sealants – seal threaded pipe connections against leakage of gases and fluids.

Flange Sealants – create reliable seals between metal flange surfaces and replace traditional gaskets in many applications.

Instant Adhesives – fast bonding for rubber, plastic, metal, and other materials. Structural Adhesives – high-strength bonding for demanding industrial assemblies.

Gasketing & Silicone Sealants – form flexible or rigid seals for machinery and equipment.

Metal Repair Compounds – repair worn, cracked, corroded, or damaged metal components.

Anti-Seize & Lubrication Solutions – protect components during assembly, operation, and maintenance. Industries served include automotive, manufacturing, engineering, construction equipment, electrical and electronics, transportation, energy, and general industrial maintenance.

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, gasket, 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 gasket
• 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 – 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, gasket 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 per-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.

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