Anaerobic Adhesive BORN2BOND™ PA-77

BORN2BOND™ PA-77 anaerobic adhesive: high-performance thread sealing

The BORN2BOND™ PA-77 anaerobic adhesive ensures high-performance thread sealing on ferrous and non-ferrous metals. It cures in the absence of air, directly within the threads.

High resistance to vibration, fluids, and temperature variations: it is the professional's choice for locking and sealing threads.

Available from Dagobert Industrie, an official distributor, with the guarantee of an authentic BORN2BOND™ product.

What is BORN2BOND™ PA-77 and how does it work?

BORN2BOND™ PA-77 is a high-performance anaerobic adhesive designed for sealing and locking threaded assemblies. It is formulated by Innotech Adhesives, a recognized specialist in industrial technical adhesives.

Its primary field of application: sealing and securing threaded fittings against fluid and gas leaks in demanding industrial environments. It is resistant to oils, fuels, solvents, and temperature variations.

Anaerobic curing principle: why this adhesive hardens without air

The mechanism is simple. As long as the product is exposed to the oxygen in the air, it remains liquid and does not cure. As soon as it is confined between two metal surfaces, with no access to air, the reaction begins.

The metal ions present on the surface of the parts (steel, cast iron, brass, etc.) act as a catalyst. They trigger the polymerization of the acrylic monomers in the formula. The result: a solid, leak-proof, and pressure-resistant seal.

This principle offers a practical advantage in the workshop: the adhesive remains workable during assembly, then hardens automatically once the parts are screwed together. No UV lamp or external heat is required.

Compared to PTFE sealant or traditional sealing tape, PA-77 ensures homogeneous product distribution across the entire thread, with no risk of overflow or circuit contamination.

Technical characteristics and performance of BORN2BOND™ PA-77

BORN2BOND™ PA-77 is a high-performance anaerobic adhesive designed for sealing and locking threaded assemblies. It cures in the absence of air, upon contact with metal ions.

Its high viscosity makes it ideal for large-diameter threads and significant clearances. It effectively fills surface irregularities without running out of the application area.

PA-77 offers high disassembly resistance. Once cured, it withstands significant mechanical and thermal stresses, suitable for demanding industrial environments.

Key properties:

• Temperature resistance: up to 150 °C continuous
• Chemical resistance: oils, fuels, hydraulic fluids
• Cures at room temperature, without UV or heat
• Compatible with steel, cast iron, brass, stainless steel
• Color: red, immediate visual identification

Product	Viscosity	Resistance	Main use
BORN2BOND™ PA-77	High	High (difficult disassembly)	Large threads, industrial sealing
Loctite 270	Medium-high	Very high (very difficult disassembly)	Permanent screw locking
Loctite 243	Medium	Medium (disassembly possible)	Standard screws, routine maintenance
BORN2BOND™ PA-55	Low-medium	Medium	Small threads, regular disassembly

At Dagobert Industrie, we offer PA-77 for applications where long-term reliability is non-negotiable: hydraulic equipment, industrial piping, and machine tools.

BORN2BOND™ PA-77 vs. other anaerobic thread sealants: comparison table

Comparison with Loctite 577, ThreeBond 1305, and other market benchmarks

The market for anaerobic thread sealants is dominated by a few key references. Here is how BORN2BOND™ PA-77 is positioned.

Product	Manufacturer	Viscosity	Temperature resistance	Disassembly	Typical application
BORN2BOND™ PA-77	Intertronics / BORN2BOND	Medium	Up to 150 °C	Yes (moderate force)	Metal threads, fluid sealing
Loctite 577	Henkel	Medium-high	Up to 150 °C	Yes (moderate force)	Fine threads, industrial piping
ThreeBond 1305	ThreeBond	Low-medium	Up to 120 °C	Yes	Fine threads, automotive industry
Loctite 542	Henkel	Low	Up to 150 °C	Yes (low force)	Very fine threads, hydraulics

The PA-77 stands out for its extensive compatibility with active and passive metals, usually without the need for an activator. This is a practical advantage on the job site or in the workshop.

Compared to Loctite 577, PA-77 offers faster curing on passive substrates like stainless steel. Less waiting, more productivity.

Compared to ThreeBond 1305, PA-77 has better temperature resistance and is suitable for more demanding hydraulic and pneumatic applications.

At Dagobert Industrie, we offer the BORN2BOND™ PA-77 as a serious and high-performance alternative to historical market references.

Typical applications and fields of use for BORN2BOND™ PA-77

BORN2BOND™ PA-77 is an anaerobic adhesive designed for sealing and locking threaded assemblies. It cures in the absence of air, between two metal surfaces in contact.

It is intended for applications where resistance to vibration, fluids, and pressure is critical. It is found in demanding industrial environments.

Here are the fields where PA-77 is commonly used:

• Hydraulics and pneumatics: sealing of fittings, plugs, and valve bodies
• Industrial mechanics: locking of screws, bolts, and nuts subject to vibration
• Automotive and industrial vehicles: engine assemblies, gearboxes, braking systems
• Pressure equipment: piping, manifolds, cooling circuits
• Maintenance and repair: tightening of loose assemblies, leak prevention

PA-77 is suitable for fine to medium threads. It is adapted to classic metal substrates: steel, stainless steel, cast iron, brass, aluminum.

Its level of disassembly resistance positions it as a high-strength locking solution, to be used when disassembly is not planned in routine maintenance or requires tools.

Product	Manufacturer	Resistance	Main use	Disassemble
PA-77	BORN2BOND	High	High strength locking, thread sealing	With tools / heat
Loctite 270	Henkel	High	Permanent locking	Difficult
Loctite 243	Henkel	Medium	Standard locking, regular maintenance	Yes, by hand
Permabond A131	Permabond	Medium	Common threaded assemblies	Yes, with tools

User guide and application tips for BORN2BOND™ PA-77

The PA-77 anaerobic adhesive is designed for sealing and locking threaded assemblies. Proper application directly determines the performance of the seal.

Surface preparation

Surfaces must be clean, degreased, and free of any trace of oil. Use a suitable solvent (acetone, isopropyl alcohol) before any application.

On passive materials such as stainless steel or certain alloys, the use of an anaerobic activator is recommended to accelerate curing. On ordinary steel, the activator remains optional but improves the setting time.

Application and setting time

Apply a few drops of PA-77 directly to the thread, on either the male or female side. The amount should remain measured: excess overflows without providing additional resistance.

Assemble the parts immediately after application. Disassembly resistance is reached in 10 to 30 minutes depending on the temperature, functional clearance, and the metal present. Maximum resistance is obtained after 24 hours at room temperature.

Precautions for use

• Do not apply to surfaces at temperatures exceeding 150 °C in continuous operation.
• Avoid contact with non-compatible plastics: test beforehand.
• Store the bottle closed, protected from light and heat between 8 °C and 21 °C.
• Wear nitrile gloves: the product is irritating in case of prolonged skin contact.

If you have any doubts about material compatibility or the choice of viscosity, our technical teams at Dagobert Industrie are available to guide you toward the reference best suited to your application.

FAQ - BORN2BOND™ PA-77

1. What is the BORN2BOND™ PA-77 anaerobic adhesive used for?

PA-77 is an anaerobic adhesive specially formulated for sealing and locking threaded assemblies. It cures in the absence of air, directly in contact with the metal, to create a strong, leak-resistant seal.

2. On what materials can it be used?

PA-77 adheres primarily to active metals like steel, cast iron, and brass. On passive metals (stainless steel, aluminum, zinc), the use of an activation primer is recommended to ensure complete and rapid curing.

3. What is the temperature resistance of PA-77?

Once cured, PA-77 withstands continuous temperatures of up to 150 °C. It is therefore suitable for industrial applications exposed to heat, such as hydraulic or pneumatic circuits, or engines.

4. Can an assembly glued with PA-77 be disassembled?

Yes. PA-77 is formulated for disassembly with tools: a wrench or socket is sufficient in most cases. For stubborn assemblies, localized heating to around 250 °C facilitates disassembly without damaging the parts.

5. How long should I wait before putting it into service?

Handling resistance is reached in a few minutes depending on the metal and ambient temperature. Full resistance is obtained after 24 hours at room temperature. An activation primer can significantly reduce this time.

6. Is PA-77 suitable for large thread sizes?

PA-77 is optimized for threads approximately M6 to M20 in size. For very large threads or large clearances, an anaerobic adhesive with higher viscosity, like BORN2BOND™ PA-75, may be more suitable.