Applications

LOCTITE® 542 – Adhesive/Sealant – Thread Sealing

Item Name: LOCTITE® 542
Manufacturer: Henkel
Technologies: Acrylic (Dimethacrylate ester)
Color: Brown liquid
Cure Type: Anaerobic; Secondary Cure: Activator
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.

1. Product Overview

LOCTITE® 542 is an acrylic-based, medium-strength, anaerobic thread-sealing adhesive designed for locking and sealing metal pipes and fittings. It prevents loosening and leakage due to shock and vibration. The thixotropic nature minimizes migration after application.

2. Applications

  • Suitable for sealing metal pipe threads and fittings
  • Prevents leakage in pressurized systems
  • Used in hydraulic and pneumatic systems
  • Recommended for applications requiring medium-strength locking

3. Typical Properties

Property Value
Uncured Properties
Appearance Brown liquid
Specific Gravity (@ 25°C) 1.06
Viscosity (Brookfield, mPa·s) 400–800 (20 rpm), 1,200–2,750 (2.5 rpm)
Viscosity (EN 12092, mPa·s) 150 (Shear rate 277 s⁻¹)
Cured Properties
Coefficient of Thermal Expansion 80×10⁻⁶ K⁻¹
Coefficient of Thermal Conductivity 0.1 W/(m·K)
Specific Heat 0.3 kJ/(kg·K)
Adhesive Performance (24h @ 22°C)
Breakaway Torque (M10 steel nuts/bolts) 15 N·m (130 lb.in)
Prevail Torque (M10 steel nuts/bolts) 9 N·m (80 lb.in)
Compressive Shear Strength (Steel pins/collars) ≥6.5 N/mm² (940 psi)
Environmental Resistance (1000h exposure)
Motor oil (125°C) 100% strength retention
Unleaded petrol (22°C) 95% strength retention
Brake fluid (22°C) 95% strength retention
Water/Glycol 50/50 (87°C) 90% strength retention
Acetone (22°C) 80% strength retention

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