PERMABOND® MH052 Anaerobic Threadsealant

Features & Benefits

• Excellent chemical resistance
• Pressure seal to burst rating of pipe
• No loose particles to clog valves
• Approved for use with gaseous oxygen
• WRAS listed for contact with wholesome (potable) water
• DVGW & BAM approval

Physical Properties of Uncured Adhesive

• Chemical composition: Acrylic
• Appearance: Yellow
• Viscosity @ 25°C: 2rpm: 65,000 mPa.s (cP)
  20rpm: 25,000 mPa.s (cP)
• Specific Gravity: 1.1
• UV fluorescence: Yes

Typical Curing Properties

• Maximum gap fill: 0.5 mm
  M56
• Time taken to reach handling strength (M10 steel) @23°C: 15 minutes*
• Time taken to reach working strength (M10 steel) @23°C: 1-3 hours
• Full strength (M10 steel) @23°C: 24 hours

Typical Performance of Cured Adhesive

• Torque strength (M10 steel ISO10964): Break 20 N·m 180 in.lb
  Prevail 11 N·m 100 in.lb
• Shear strength (steel collar & pin ISO10123): 10 MPa 1450 psi
• Coefficient of thermal expansion: 90 x 10-6 mm/mm/°C
• Dielectric strength: 11 kV/mm
• Thermal conductivity: 0.19 W/(m.K)

Surface Preparation

Though the anaerobic adhesives will tolerate a slight degree of surface contamination, best results are obtained on clean, dry and grease free surfaces. The use of a suitable solvent-based cleaner (such as acetone or isopropanol) is recommended.
In general, roughened surfaces (~25μm) give higher bond strengths than polished or ground surfaces.
To reduce the curing time, especially on inactive surfaces (such as zinc, aluminium and stainless steel), the use of Permabond A905 or ASC10 can be considered.

Directions for Use

1) Apply a continuous bead circumferentially 1-2 threads from the leading edge.
2) Ensure sufficient is applied to give a complete seal.
3) For taper/parallel threads ensure adhesive is positioned where the threads will engage fully. Gaps, and therefore cure times, may be greater than expected with this joint configuration.
4) Tighten with normal tools.