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Master Bond adhesives
Mid-Mountain Materials THERMOSEAL® FIBERPAK® M77HS Moldable
Categories: Ceramic; Other Engineering Material; Ceramic/Metallic Coating

Material Notes: Description: A family of high temperature moldables designed for a wide variety of uses. THERMOSEAL® FIBERPAK® MOLDABLES may be formed into shapes or linings, pushed into cracks and holes, or spread into thin sections as coating and separating mediums.

APPLICATION: THERMOSEAL® FIBERPAK® MOLDABLES are applied with the fingers, towels, spatulas, or from caulking guns. Gloves should be worn when hand applying. THERMOSEAL® FIBERPAK® MOLDABLES are easily formed to any contour or readily pressed into cracks and smoothed out. Water wet the tool to facilitate smoothing and contouring. Drying consists of removing the liquid portion of the mix usually by use of an external heat source at 220-200ºF • 95-150ºC for approximately six hours per inch of thickness.


  • Trough linings for molten metal transfer
  • High temperature sealing and coating
  • Light weight refractory shape manufacture
  • Trough coating and patching
  • Furnace Patching


  • 11 oz. Caulking tubes
  • 32 oz. Caulking tubes
  • One Gallon Bucket
  • 5 Gallon Buckets
  • 55 Gallon Drums

Information provided by Mid-Mountain Materials.

Available Properties
  • Density, Fired Density at 2300°F
  • Density, Wet Density
  • Density, Dry Density
  • Solids Content, Wet
  • Maximum Service Temperature, Air, Use Limit
  • Shrinkage
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