LH050 Anaerobic Thread Sealant, White

Permabond® LH050 pipe sealant performs well on most steel and brass metals. It provides an excellent alternative to pipe dopes and pipe tapes for sealing pipe joints.

It cures anaerobically when in contact with metal parts (as in a threaded pipe joint). LH050 dispenses as a smooth paste when applied, filling the entire space between the threaded parts. It then cures at ambient temperature to form a solid plastic, completely sealing against hydraulic fluids, air, gases, and chemicals. In addition, it locks the pipes, plugs, or fittings against vibration loosening, tampering, and variable temperature effects.

Physical Properties of Uncured Adhesive

• Chemical composition: Methacrylate esters
• Appearance: White
• Viscosity @ 25°C: 250,000 mPa.s (cP)
• Specific Gravity: 1.1
• Particle size: <10µm

Typical Curing Properties

• Maximum gap fill: 0.5mm (0.02")
• Time taken to reach handling strength (M10 steel) @23°C: 2 hours*
• Full strength (M10 steel) @23°C: 24 hours

*Copper and its alloys will make the adhesive cure more quickly, while oxidized or passivated surfaces (like stainless steel) will reduce cure speed. To reduce curing time, use Permabond activator A905 or ASC10. Alternatively, increasing the curing temperature will reduce curing time.

Typical Performance of Cured Adhesive

• Torque strength (M10 steel ISO10964)
  • Break: 4 N·m (35 in.lb)
  • Prevail: 3 N·m (25 in.lb)
• Compressive shear strength (steel collar & pin ISO10123): 7 MPa (1,000 psi)
• Coefficient of thermal expansion: 90 x 10^-6mm/mm/°K
• Coefficient of thermal conductivity: 0.19 W/(m.K)