Permabond LH197 Anaerobic Gasketmaker

Permabond® LH197 is an anaerobic material designed for making “formed in situ” gaskets between metal surfaces. It is highly flexible, making it ideal for dissimilar surfaces where differential thermal expansion and contraction could be an issue.

Permabond LH197 Anaerobic Gasketmaker

SKU HH131 Categories , Brands: .
Permabond® LH197 is an anaerobic material designed for making “formed in situ” gaskets between metal surfaces. It is highly flexible, making it ideal for dissimilar surfaces where differential thermal expansion and contraction could be an issue. Due to its flexibility it is easy to remove and ideal for gasketing applications where routine disassembly is required or on soft metal surfaces such as certain aluminium alloys which damage easily.

Features & Benefits

  • Flexible
  • Replaces all sizes of formed gaskets
  • Ideal for bonding dissimilar metals
  • Suitable for use with non-ferrous metals
  • Can be dismantled with normal tools

 

Physical Properties of Uncured Adhesive

  • Chemical composition: Acrylic
  • Appearance: Green
  • Viscosity @ 25°C: 2rpm: 50,000 mPa.s (cP)
    20rpm: 20,500 mPa.s (cP)
  • Specific Gravity: 1.1
  • UV fluorescence: Yes

Typical Curing Properties

  • Maximum gap fill: 0.3 mm 0.012 in
  • Time taken to reach handling strength (M10 steel) @23°C: 20minutes*
  • Time taken to reach working strength (M10 steel) @23°C: 3-6 hours
  • Full strength (M10 steel) @23°C: 24 hours

Typical Performance of Cured Adhesive

  • Torque strength (M10 steel ISO10964): Break 10 N·m 90 in.lb
    Prevail 5 N·m 45 in.lb
  • Shear strength (steel collar & pin ISO10123): 5 MPa 750 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 as a bead, by roller, silkscreen or stencil. Ensure all potential leak paths such as flange bolt holes are encircled.
2) Removal: use normal tools to lever the surfaces apart.
3) Ensure old adhesive is removed before reassembling the parts.

TDS / MSDS

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TDS / MSDS

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Technical Data sheet and safety data sheet

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