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Thermal Management

LOCTITE® 565 ™ – Adhesive/Sealant – Thread Sealing

Item Name: LOCTITE® 565 ™
Manufacturer: Henkel
Technologies: Acrylic (Methacrylate ester)
Color: White to off-white paste
Cure Type: Anaerobic; Secondary Cure: Activator
Package Size: Contact to Techniq VNfor details.
Shelf Life: Contact to Techniq VN for details.

1. Product Overview

  • Technology: Acrylic
  • Chemical Type: Methacrylate Ester
  • Appearance (Uncured): White to off-white paste
  • Components: One-component (no mixing required)
  • Viscosity: High
  • Cure Type: Anaerobic
  • Secondary Cure: Activator
  • Application: Thread Sealing
  • Strength: Low
  • Key Features: Locks and seals metal pipes and fittings, prevents loosening and leakage due to vibration.

2. Applications

  • Suitable for locking and sealing of metal pipes and fittings.
  • Used in systems handling gasoline, petroleum oils, natural gas (up to 300 PSIG), and butane (pipe size up to 2 inches).
  • Certified for use in potable water systems (NSF Standard 61, up to 82°C).
  • Successfully tested for pressure resistance (207 bar / 3000 psi, ASTM D 1599).

3. Typical Properties

Uncured Properties

Property Value
Specific Gravity (@25°C) 1.1
Viscosity (mPa·s) 175,000 – 525,000
Flash Point See SDS

Cured Properties

Property Value
Coefficient of Thermal Expansion 80 × 10⁻⁶ K⁻¹
Thermal Conductivity 0.1 W/(m·K)
Specific Heat 0.3 kJ/(kg·K)

Performance (After 72 hours @ 22°C)

Test Value Standard
Breakaway Torque (3/8 NPT steel pipe tees) 5 N·m (45 lb.in.) ASTM D 6396
Breakaway Torque (3/8 x 24 steel nuts & bolts) ≥2.8 N·m (25 lb.in.) ISO 10964
Compressive Shear Strength ≥1 N/mm² (145 psi) ISO 10123

Environmental Resistance

Test Environment Temp (°C) % Strength Retained (720 h)
Motor Oil (MIL-L-46152) 87 100%
Unleaded Gasoline 87 100%
Phosphate Ester 87 100%
Brake Fluid 87 92%
Distilled Water 87 100%

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