Retaining - Gasketing – Bonding

Loctite 635

A 1-part retaining compound with very high shear strength. Ideal for bonding cylindrical parts, such as bearings, bushings and sleeves in housings or on shafts. Prevents loosening and leakage from shock and vibration.

Loctite 662

LOCTITE^® 662 is a yellow, medium-strength retaining compound for bonding cylindrical fitting parts, particularly where product outside the bondline must be completely cured. Narrow beads of this product can be solidified – even when in contact with air or by exposure to high-intensity, short-wavelength UV light. This medium-viscosity urethane methacrylate acrylic liquid cures when confined in the absence of air between close-fitting metal surfaces or when exposed to UV light of sufficient intensity. It’s designed to prevent loosening and leakage from shock and vibration. It has a 7-minute fixture time on steel and an operating temperature range of -55°C to 150°C (-67°F to 302°F).

Loctite 640

LOCTITE^® 640 is ideal when you need a retaining compound for parts that require a longer positioning time, such as large-diameter parts or those made of active metals such as brass. This high-strength adhesive has a typical fixture time on steel of 2 hours, and a service temperature range of -55°C to 175°C when fully cured. The product's maximum diametrical clearance is 0.1 mm, and it fluoresces when exposed to UV light – great for quality control. Perfect for retaining keys and splines, eliminating backlash in worn assemblies, retaining bearings in place and preventing spin-out, retaining rotor assemblies on shafts in fractional and sub fractional horsepower motors, retaining bushings and sleeves in housings and on shafts, augmenting press fits, and restoring the fit to worn assemblies or out-of-tolerance parts.

Loctite 601

LOCTITE^® 601 is a green, high-strength retaining compound for bonding cylindrical fitting parts. It is designed for applications requiring a permanent bond and is suitable for a maximum diametrical clearance of 0.1 mm (0.004"). This low viscosity dimethacrylate ester acrylic liquid cures when confined in the absence of air between close-fitting metal surfaces. It is designed to prevent loosening and leakage from shock and vibration. It has a 25-minute fixture time on steel and an operating temperature range of -55°C to 150°C (-67°F to 302°F).

Loctite 641

When you’re working with parts that need regular dismantling – bearings on shafts and in housings, for example – try LOCTITE^® 641. This medium-strength anaerobic retaining compound cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration.

Loctite 648

LOCTITE^® 648 is ideal for preventing loosening and leakage from shock and vibration. This green, low-viscosity, high-strength, anaerobic-curing retaining compound provides reliable bonds in cylindrical assemblies, even when exposed to high-temperature environments. It cures on active metals (e.g. mild steel) as well as passive substrates like stainless steel and plated surfaces, and it even tolerates minor surface contaminations from oils such as cutting, lubrication, anti-corrosion and protection fluids – without the use of a primer or cleaner.

Loctite 660

If you want a product that enables the re-use of worn bearing seats, keys, splines or tapers, try LOCTITE^® 660. This high-strength retaining compound is designed for the bonding of cylindrical fitting parts, particularly where bond gaps occur – and without the need for re-machining. It’s also suitable for retaining shims. Expect excellent gap-cure characteristics.

Loctite 603

The low viscosity of LOCTITE^® 603 makes it ideal for augmenting press/interference fits, or slip-fitted assemblies with small clearances. The high-strength adhesive reliably prevents loosening from shock and vibration on cylindrical parts, such as roller bearings or oil-impregnated bushings mounted in housings, while it also prevents corrosion between the metal parts.

Loctite 121078

LOCTITE^® 121078 is a green, high-strength retaining compound for bonding cylindrical fitting parts, designed for applications requiring a permanent bond, particularly where strength at elevated temperatures is required. It’s typically used for holding gears and sprockets onto gearbox shafts and rotors on electric motor shafts. This medium-viscosity urethane methacrylate acrylic liquid cures when confined in the absence of air between close-fitting metal surfaces. It’s designed to prevent loosening and leakage due to shock and vibration. The thixotropic nature of LOCTITE 121078 makes it easy to apply and reduces sealant migration after application. It fluoresces under UV light – great for quality control.

Loctite 638

For a retaining compound offering high strength on all metals, including passive substrates, try LOCTITE^® 638. You can expect high-temperature performance and good oil tolerance, a fixture time of just four minutes, and a gap fill of 0.15 mm to 0.25 mm (0.006" to 0.01"). It even tolerates minor surface contaminants, including industrial oils. A high-viscosity product, it’s ideal for shafts, gears, pulleys and similar cylindrical parts, and can also be used for high-strength threadlocking and thread-sealing applications. Its operating temperature range is -55°C to 180°C (-65°F to 355°F).

Loctite 609

When it comes to locking bushings and sleeves in housings on shafts, augmenting press fits, or bonding any close-fitting cylindrical parts, LOCTITE^® 609 is a good choice. This green, high-strength, anaerobic-curing retaining compound cures in the absence of air between close-fitting metal surfaces, providing a high-strength and corrosion-free bond. Typical applications include rotor assemblies on shafts in fractional and subfractional horsepower motors.

Loctite 620

When it comes to bonding, locating pins in radiator assemblies, sleeves in pump housings and bearings in auto transmissions – especially when you need high temperature resistance up to 232°C (450°F) –, LOCTITE^® 620 is a good choice. This high-strength, anaerobic-curing retaining compound is designed for bonding cylindrical fitting parts to prevent loosening and leakage due to shock and vibration. It cures when confined in the absence of air between close-fitting metal surfaces and can fill gaps from 0.15 mm to 0.25 mm (0.006" to 0.01").

Loctite 680

LOCTITE^® 680 is a green, high-strength, anaerobic-curing retaining compound for the assembly and attachment of cylindrical fitting parts, particularly where low viscosity is required. The product prevents loosening and leakage from shock and vibration and exhibits robust curing performance by curing on both active metals (e.g. mild steel) and passive substrates (e.g. stainless steel and plated surfaces), as well as slightly oiled or contaminated surfaces, without the need for a primer or cleaner.

LOCTITE^® High Flex Gasket Maker

Pre-cut and other formed-in-place chemical gaskets have their shortcomings, but there is a solution in LOCTITE^® High Flex Gasket Maker. This flexible form-in-place gasket paste provides high temperature resistance and flexibility. It's tough, resilient, solvent- and temperature-resistant seal flexes with flange movements caused by vibration, pressurisation or thermal changes. Perfect for making gaskets for pumps, housings, axle covers, gear cases, split crankcases and other areas where conventional gaskets are used. It can even be used to repair damaged conventional gaskets or as a coating/dressing for conventional gaskets.

LOCTITE^® SI 5999

LOCTITE^® SI 5999 is a 1-part, grey silicone paste for non-corrosive gasketing and blow-out resistance. It is thixotropic, so the liquid won’t migrate after you’ve applied it to the substrate, and is specially designed for servicing, manufacturing and rebuilding, especially in automotive powertrain applications. It’s suitable for temperatures as high as 250°C (482°F).

LOCTITE^® 515

is a form-in-place anaerobic-curing flange sealant that cures when confined in the absence of air between close fitting metal surfaces. It seals close-fitting joints between rigid metal faces and flanges and will flex with minor flange movements. It provides resistance to low pressures immediately after assembly of flanges and is typically used as a form-in-place gasket for pumps, thermostats, compressors, transmission housings, and axle covers. The product is fluorescent under UV light, allowing visual inspection of the bead.

LOCTITE^® AA 5820

LOCTITE^® AA 5820 is a 1-part, non-silicone, oxime-free, polyacrylate-based adhesive/sealant that cures with moisture at room temperature. It is designed with a heavy body viscosity for online, low air pressure tests to be carried out before the product begins to cure. The non-silicone-based resin doesn’t promote foaming in lubricants and exhibits excellent resistance to powertrain fluids. It’s primarily designed for flange sealing with excellent oil resistance and is non-permeable to hydrocarbons. Ideal for cast metal, stamped steel, and moulded plastic covers for engines, transmissions and axles, it also works well for sealing plastic and metal housings on electronic components.

LOCTITE^® SI 587

LOCTITE^® SI 587 is a metallic blue, oxime silicone paste used for gasketing and sealing applications in plant maintenance and variously sized OEM applications. A form-in-place gasket/sealant, it has been designed to provide outstanding sealing performance against industrial and automotive engine oils. Its thixotropic nature reduces the migration of liquid product after application to the substrate and allows for reliable quality control, e.g. in dispensing automation as well as manual applications. This product is typically used in demanding applications up to 260°C (500°F).

LOCTITE^® 5182

LOCTITE^® 5182 is a fast-curing, thixotropic, medium-strength sealant. It cures when confined in the absence of air between close-fitting metal surfaces and is ideal for sealing gaskets, housings, cases and covers, as well as repairing and replacing cut gaskets up to 0.08 mm (0.003") in thickness. Apply heat or use an activator for a faster cure or higher strength.

LOCTITE^® SI 5970

For an effective, convenient alternative to pre-cut gaskets, choose LOCTITE^® SI 5970. This 1-part alkoxy-silicone sealant has been designed specifically for gasketing applications where in-line, low-pressure quality control tests need to be conducted before the product begins to cure. Ideal for stamped sheet metal covers (timing-gear covers and oil sumps) where you need good oil resistance and the ability to withstand high joint movement.

Loctite 573

To seal close-fitting joints between rigid metal faces and flanges, try LOCTITE^® 573. This medium-strength, medium-viscosity sealant is perfect as a form-in-place gasket on rigid flanged connections, e.g. gearbox and engine casings, and for sealing large, rigid metal flanges where assembly may take up to several hours.

Loctite 574

For an instant seal and reduced product migration, try LOCTITE^® 574. This general-purpose, thixotropic gasketing product seals close-fitting joints between rigid metal faces and flanges and provides resistance to low pressures immediately after assembly. Ideal for use as a form-in-place gasket on rigid flanged connections, e.g. gearbox and engine casings, it has excellent resistance to oil, water and glycol.

LOCTITE^® SI 5980

LOCTITE^® SI 5980 is a black, alkoxy-silicone gasketing sealant, ideal for gasketing applications where good oil resistance and the ability to withstand high joint movement are required: typically, stamped sheet-metal covers (timing-gear covers and oil sumps). LOCTITE SI 5980 cures when exposed to moisture in the air to form a rigid rubber gasket. Its thixotropic nature makes it easy to apply and reduces sealant migration after application. It withstands in-line, low-pressure tests immediately after the assembly of the flanges.

LOCTITE^® SI 5690

LOCTITE^® SI 5690 is a non-corrosive, oil-resistant, moisture-curing gasketing sealant, ideal for copper and applications involving large gaps. It can also be used for electrical insulating applications and is compatible with various surfaces, including metals and plastics. LOCTITE SI 5690 cures when exposed to moisture in the air to form a rigid rubber gasket. Its thixotropic nature makes it easy to apply and reduces sealant migration after application. LOCTITE^® SI 5690 is label-free and offers excellent adhesive strength, even at temperatures up to 350°C (662°F).

LOCTITE^® SI 5699

LOCTITE^® SI 5699 is a flexible, form-in-place, room-temperature vulcanizing (RTV) silicone sealant which cures at room temperature on exposure to moisture in the air to form a tough, rubber gasket. It is tack-free after just 10 minutes and can be used on flexible, machined or cast surfaces, metal or plastics. Great for general flange applications and, in particular, rigid-flange-sealing on, for example, transmissions and cast metal housings. Perfect for when water/glycol resistance is required.

LOCTITE^® 518

LOCTITE^® 518 is a general-purpose, primer less, semi-flexible, form-in-place anaerobic flange sealant. It cures – even in the presence of minor surface contaminants – to seal close- fitting joints between rigid metal flanges and will flex with minor flange movements. It provides resistance to low pressures immediately after assembly of flanges and is ideal for use on aluminium substrates where you need very good flexibility. Typically used as a form-in-place gasket for pumps, thermostats, compressors, transmission housings and axle covers, it not only works on active metals (e.g. mild steel) but also on passive substrates, such as aluminium with a low copper content. You can expect gap-filling performance to 0.25 mm (0.01").

LOCTITE^® SI 5920

If you are looking for a highly temperature-resistant, moisture-curing sealant for corrosion-sensitive applications, LOCTITE^® SI 5920 could be a great fit. Its thixotropic nature allows for easy flow dispensing, while preventing the migration of liquid product once applied to the part. It is ideal for sealing flexible flanges with machined or cast surfaces and is particularly suitable for high-temperature applications up to 350°C (662°F). It is also used for electrical insulating applications.

LOCTITE^® SI 5900

LOCTITE^® SI 5900 is a moisture-cured, heavy-bodied, silicone-based, form-in-place flange sealant with excellent resistance to oil and joint movement. Its heavy-bodied properties allow it to withstand in-line, low-pressure tests before the product begins to cure. Typical applications include stamped sheet metal covers, and it is suitable for gaps up to 1 mm (0.04") in metal, plastics, glass, and ceramic substrates. It has a skin-over time of just 15 minutes, and once cured provides a seal that won’t shrink, compress, crack or relax, even when exposed to oil or joint movements.

LOCTITE^® SI 5910

When you need a low-strength, silicone-based, form-in-place gasketing product designed for use on flexible flanges with machined or cast surfaces (metal or plastics), LOCTITE^® SI 5910 is a good choice. It is suitable for gaps up to 1 mm (0.039") and offers a cure-through volume (in 24 h) of 2.75 mm (0.108"). Typical applications include stamped sheet metal covers (timing-gear covers and oil sumps). Its thixotropic nature reduces the migration of liquid product after application to the substrate, allowing for reliable quality control, e.g. in dispensing automation, as well as in manual applications.

LOCTITE^® 415

LOCTITE^® 415 is a medium-viscosity, general-purpose instant adhesive that is particularly suited to bonding metal substrates. It has a fixture time of 20-40 seconds. It can also be used for the bonding of rubbers and plastics, including difficult-to-bond plastics (PP, PE, PTFE), when used in conjunction with a primer such as LOCTITE^® SF 770. Particularly suited to bonding of metal substrates. Medium viscosity with gap fill to 0.2 mm (0.008")

LOCTITE^® 496

LOCTITE^® 496 is a very low-viscosity, general-purpose instant adhesive that is particularly suited to bonding metal substrates. It has a fixture time of 10-30 seconds, and it's very low viscosity makes it ideal for very tight gaps and close-fitting parts. It can also be used for the bonding of rubbers and plastics, including difficult-to-bond plastics (PP, PE, PTFE) when used in conjunction with a primer such as LOCTITE^® SF 770.

• Particularly suited to bonding of metal substrates
• Low viscosity
• Works well on close-fitting parts

LOCTITE^® 460

LOCTITE^® 460 is a low-odour, low-bloom instant adhesive. This low-viscosity adhesive is ideal for applications where odour and/or blooming are a concern. LOCTITE 460 provides for rapid bonding of metals, elastomers and plastics, including difficult-to-bond plastics (PP, PE, PTFE) when used in conjunction with a primer such as LOCTITE^® SF 770.

• Low odour for applications where vapour control is vital
• Low bloom for cosmetic applications
• Low viscosity
• Bonds plastics, rubbers and metals

LOCTITE^® 406

LOCTITE^® 406 is a low-viscosity instant adhesive specially designed for the fast bonding of plastics and rubbers. It fixes the adhering components in seconds and hardens very quickly, forming an ultra-thin bond. The assembly of difficult-to-bond (PP, PE, PTFE) materials is possible when using the primer LOCTITE^® SF 770.

• Rapid fixture time on plastic and rubber, including EPDM
• Assembles difficult-to-bond materials when LOCTITE SF 770 primer is used
• Very low viscosity product for small gaps
• Reduced hazardous ingredients for improved occupational safety

LOCTITE^® 495

LOCTITE^® 495 is a transparent, colourless, low-viscosity, general-purpose instant adhesive offering fast-fixturing. It is able to bond a wide range of materials, including plastics, rubbers and metals. It can also bond polyolefins when used in combination with LOCTITE^® SF 770 primer.

• General-purpose colorless and transparent bonding
• Low viscosity for thin bond lines
• Ideal for quick repairs
• Reduced hazardous ingredients for improved occupational safety

LOCTITE^® 416

LOCTITE^® 416 is a medium viscosity, general-purpose instant adhesive. It is suitable for plastics, rubbers and metals. It has a fixture time of 30 seconds. LOCTITE 416 can be used for bonding difficult-to-bond plastics (PP, PE, PTFE) when used in conjunction with a primer such as LOCTITE^® SF 770.

• General-purpose plastic bonder
• Excellent adhesion to most substrates
• Assembles difficult-to-bond plastics when LOCTITE SF 770 primer is used
• Reduced hazardous ingredients for improved occupational safety

LOCTITE^® 414

LOCTITE^® 414 is a low viscosity, general-purpose instant adhesive. It is suitable for plastics, rubbers and metals. It has a fixture time of 10 seconds. LOCTITE 414 can be used for bonding difficult-to-bond plastics (PP, PE, PTFE) when used in conjunction with a primer such as LOCTITE^® SF 770.

• General-purpose plastic bonder
• Excellent adhesion to most substrates, including metals, elastomers and plastics
• Assembles difficult-to-bond plastics when LOCTITE SF 770 primer is used

LOCTITE^® 407

LOCTITE^® 407 is a general-purpose, colourless to straw-colored ethyl cyanoacrylate-based instant adhesive for bonding metals, plastics and rubbers where heat resistance is required. It can also bond polyolefins in combination with primer LOCTITE^® SF 770 or LOCTITE^® SF 7239. It’s particularly ideal for small to medium-sized parts where it offers extremely fast curing when confined between close-fitting surfaces.

• Suitable for metals, plastics, rubbers and polyolefins
• Fast-curing
• Solvent-free
• High ance
• Long open time

LOCTITE^® 4061

LOCTITE^® 4061 is a very low-viscosity (medical device grade) instant adhesive designed especially for the fast bonding of plastics and rubbers. It fixes the adhering components in seconds and hardens very quickly, forming an ultra-thin bond. By using LOCTITE^® SF 7701 primer, the assembly of difficult-to-bond (PP, PE, PTFE) materials is possible. LOCTITE 4061 is tested with Henkel’s ISO 10993 protocols for use in disposable medical devices.

• Very low-viscosity medical device adhesive for small gaps
• Rapid fixture time on plastic & rubber, including EPDM
• Assembles difficult-to-bond plastics when LOCTITE SF 7701 primer is used
• ISO 10993 bio-compatible

LOCTITE^® 402

LOCTITE^® 402 is a high-temperature and fast-fixturing instant adhesive that reliably and strongly bonds to a wide range of plastic, rubber and metal substrates. It is ideally suited for joining small parts in high-speed production applications, as well as quick, on-the-go repairs. Assembly of difficult-to-bond (PP, PE, PTFE) materials is possible when using the primer LOCTITE^® SF 770 (or LOCTITE^® SF 7701 for medical device assembly).

• Ultra-performance adhesive providing resistance up to 135°C (275°F) and fast fixture
• ISO-10993 biocompatible
• Ideal for quick repairs and high-speed production applications
• Unique, patented formula with reduced hazardous ingredients
• Assembles difficult-to-bond materials using LOCTITE SF 770 or SF 7701 primer

LOCTITE^® 401

LOCTITE^® 401 is a fast-fixturing instant adhesive (industrial grade) designed for the assembly of a wide range of materials where uniform stress distribution and high tensile and/or shear strength are required. The assembly of difficult-to-bond (PP, PE, PTFE) materials is possible when using primer LOCTITE^® SF 770. In addition, it's suited for bonding porous materials such as wood, paper, leather, and fabric.

• Universal industrial instant adhesive
• Very high strength on close-fitting parts
• Reduced hazardous ingredients for improved occupational safety
• Bonds a wide range of similar or dissimilar substrates (metals, rubber, wood, cardboard, ceramics and most plastics)
• Assembles difficult-to-bond materials using LOCTITE SF 770 primer

LOCTITE^® EA E-30CL

LOCTITE^® EA E-30CL is a low-viscosity, industrial-grade adhesive. Once mixed, the 2-part epoxy cures at room temperature with minimal shrinkage to form an ultra-clear adhesive bond line with excellent impact resistance. It is resistant to a wide range of chemicals and solvents and has excellent dimensional stability over a wide range of temperatures. Perfect for bonding, small potting, staking and laminating applications where optical clarity and excellent structural, mechanical and electrical insulating properties are required. Bonds most materials including glass, optical fibres, ceramics, metals and many rigid plastics.

LOCTITE^® HY 4090

LOCTITE^® HY 4090 is a fast and powerful, high-viscosity, off-white-to-light-yellow universal bonder. In the world of structural bonding, it is unique, combining strength and speed to provide powerful, long-lasting bonds. It has a fixture time of 90-180 seconds and is suitable for gaps up to 5 mm (0.2"). Resistant to vibration, shock and impact, it works with a wide range of substrates. For best results, use with LOCTITE^® 50 ml Adhesive Mixing Nozzle, LOCTITE^® 400 ml Adhesive Mixing Nozzle, LOCTITE^® 96001, or LOCTITE^® 983439.

• Vibration, shock and impact resistant
• High temperature- and moisture-resistance
• UV-resistant for outdoor applications
• Fixture time: 90-180 secs
• High shear strength

LOCTITE^® AA 324

LOCTITE^® AA 324 is a transparent, acrylic structural adhesive liquid for bonding flat parts together, joining dissimilar materials, and metal-to-metal bonding. Specifically formulated for toughness and impact strength, it cures with the aid of an activator and is ideal for joining ferrite to plated materials in electric motors and loudspeaker hardware.

• General-purpose structural bonder
• Bonds metal-to-metal and dissimilar substrates
• Dual cure: anaerobic and activator
• Formulated for toughness and impact strength
• Bonds flat parts together

LOCTITE^® HY 4080

LOCTITE^® HY 4080 is a 2-part, opaque to slightly yellow, cyanoacrylate/acrylic hybrid structural bonding adhesive that provides excellent, powerful bonds on metals, composites and plastics. It fixes quickly at room temperature and has high operational strength within just an hour. LOCTITE HY 4080 also exhibits high shear strength over a wide range of temperatures, even in larger gaps.

• High viscosity
• Works on a wide variety of substrates
• Fast fixture at room temperature
• Excellent impact resistance
• Good resistance to peel and impact loads

LOCTITE^® AA 330

LOCTITE^® AA 330 is a 2-step, acrylic-based multi-purpose structural bonder, perfect for dissimilar substrates like PVC, phenolic and acrylic compounds. Applications include tool handles, appliances, sporting goods, and decorative trims. It is a medium- to high-viscosity product with good impact resistance and a service temperature up to 100°C (212°F). It requires LOCTITE^® SF 7387 to activate.

• Multi-purpose, multi-substrate structural bonder
• Good impact resistance
• Bonds dissimilar substrates
• Activator required for cure

LOCTITE^® UR 7221

LOCTITE^® UR 7221 is a solvent-free, polyurethane (PU) adhesive ideal for general assembly applications. It’s typically used for manufacturing sandwich elements with porous substrates, e.g. wood, which contain humidity. The substrates can be bonded to one another or to metals, laminated panels, various plastics, rigid foams made of polystyrene, polyurethane, and others. When applied, LOCTITE UR 7221 hardens by humidity or spraying with a fine water mist. At room temperature and with the required humidity in the joint, sufficient strength will be obtained after approximately 2 to 4 h. Faster curing can be achieved using a heated press with a maximum temperature of 70°C (158°F).

• IMO approved for shipbuilding
• Solvent-free
• Moisture-curing
• Long open time