Loctite Thread Sealant 542

Loctite 542 is a high-performance anaerobic thread sealant designed for locking and sealing fine-threaded metal fittings. It prevents leakage of gases and liquids, making it ideal for use in hydraulic, pneumatic, and other precision metal pipe and fitting applications.

Key Features

1. Reliable Sealing:
   • Provides a robust seal that prevents leaks of air, water, oil, and most industrial gases.
2. Fine Thread Compatibility:
   • Specifically formulated for sealing fine-threaded metal fittings.
3. Prevents Loosening:
   • Locks threads in place, resisting vibration and thermal cycling.
4. Temperature and Pressure Resistant:
   • Maintains sealing integrity in extreme conditions.
5. Cures in Absence of Air:
   • Hardens when confined between close-fitting metal threads, ensuring a leak-free seal.

Applications

1. Hydraulics and Pneumatics:
   • Seals fittings in high-pressure hydraulic and pneumatic systems.
2. Industrial Equipment:
   • Suitable for sealing pipe fittings in machinery and industrial plants.
3. Automotive:
   • Ideal for sealing fluid connections in automotive systems.
4. Marine and Aerospace:
   • Reliable for high-stress environments involving gases and liquids.

Technical Specifications

• Base: Methacrylate ester
• Color: Brown
• Viscosity: Medium (4,000–10,000 mPa·s)
• Fixture Time: 15 minutes (depending on material)
• Full Cure Time: 24 hours
• Pressure Resistance: Up to 350 bar (5,000 psi)
• Temperature Range: -55°C to +150°C (-65°F to +300°F)

How to Use

1. Surface Preparation:
   • Clean threads thoroughly with a degreaser or cleaner to remove oil, grease, and dirt.
2. Application:
   • Shake the bottle well.
   • Apply the sealant evenly around the male threads.
3. Assembly:
   • Assemble parts and tighten as required.
4. Curing:
   • The sealant begins to set in 15 minutes and achieves full strength in 24 hours.

Advantages

• Provides a secure, leak-proof seal.
• Resistant to high pressure and temperature.
• Prevents corrosion and galling of threads.
• Eliminates the need for traditional thread sealing methods like PTFE tape.

Storage

• Store in a cool, dry place between 8°C and 21°C (46°F and 70°F).
• Keep the bottle tightly closed to prevent exposure to air.

Safety Precautions

• Use in a well-ventilated area.
• Avoid contact with skin and eyes. If contact occurs, wash with plenty of water.
• Keep out of reach of children.

Loctite 542 Thread Sealant is the go-to choice for professionals seeking reliable sealing and locking of fine-threaded metal fittings in critical applications.