Gunther Ultra/Bond Mastic - Cartridge

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Gunther GN100A Gunther Ultra/Bond Mastic - Cartridge

Item #: GN100A by CR Laurence

2 2 reviews

In Stock $9.50 /each


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  • Available in Two High Strength Formulas
  • Ultra/Bond® Compresses for Tight Tolerances Such as Overlays
  • Will Compress to 1/32" for Mirror Overlays Can Build Up to 3/4" for Uneven Surfaces
  • Available in 10.1 Fl. Oz. Cartridges or Gallon Cans
  • Extra/Build® Provides Build Out for Large Mirrored Walls
  • Available in 10.1 Fluid Ounce Cartridges or Gallon Cans




10.1 Ounces

Shelf Life

Products have a 1 year shelf life when stored between 40° F and 80° F





Shelf Life (Months)






CRL Gunther Ultra/Bond® and Extra/Build® Mirror Mastics are high quality adhesives formulated to provide a strong, permanent bond between electro-copper-plated glass mirror and various substrates. Both have been field tested for compatibility with silver, copper, and mirror backing. Both have an easy working consistency year round, and will adhere to a wide variety of substrates including Drywall, Wood, Metal, Glass, Marble, and Tile but should be tested for Bleeding.
NOTE: Not for use on acrylic mirror. Use Cat. No. GN8 Gunther Prime-N-Seal Primer on all porous substrates. Application guidelines are available online for all Gunther products. Mechanical support systems are recommended for all mirror applications.
Gunther Ultra/Bond® viscosity provides for a build out of 3/4" (19 mm), and can be compressed to 1/32" (.8 mm) for mirror installations requiring close tolerances, such as overlays, mirrored furniture, and medicine cabinets.

  • CONVENIENT DRYING! Within twenty-four hours Gunther ULTRA/BOND cures to 30% of maximum strength.
  • Gunther ULTRA/BOND cures to 100% strength in twenty-eight days at normal room temperatures
  • STRONG! Four hundred pounds per square inch, tested strength, totally cured after twenty-eight days. In most cases
    Gunther ULTRA/BOND is much stronger than the surfaces to which it is applied.
  • Important Notes: Ultra/Bond® is applied to clean, dry, dust-and grease-free surfaces with vertical bead reinforced to the full length of the mirror, 5"-6" (130-155 mm) spacing between each other and at 3" (75 mm) from the edge of the mirror. Gunther Prime and Seal provides a solid basis for better adhesion and protects against etching on the back of the mirror.


  • *NOT for outdoor use.
  • *DO NOT apply to wallpaper or apply directly to Safety films made of vinyl and not on acrylic mirrors or treated wood. For more details or information, visit the data sheets.

    Keep away from heat, sparks and flame. Vapors may ignite explosively. No smoking. Delete all flames, burners or ovens. Turn off heating and lights are off, and disconnect all electrical motors and appliances before use disappeared until all vapors. Prevent formation of vapor present in the open all the windows and doors. The central nervous system may be affected, as the fumes can cause dizziness, headaches and nausea. Direct contact of the skin, eyes or clothing should be avoided. Avoid breathing vapors. Repeated or prolonged inhalation can cause brain damage, nervous system, liver or the kidneys can be attacked, as it can lead to heart rhythm disturbances. INTENTIONALLY ABUSE AND INHALATION CONSCIOUS OF THE INGREDIENTS MAY RESULT IN SERIOUS INJURY.

    Gunther Mirror Mastics, the manufacturer or Royal Adhesives and Sealants LLC., shall not be liable for consequential damages for use of Gunther products. Damages incurred in connection with the use of Gunther products by the buyer, seller, user or any other person are strictly limited to the purchase price of the goods purchased, the customer takes full responsibility. All installation guidelines must be met. For installation instructions please refer to the user.

    CRL assumes no express or implied liability for any mirror adhesives. It is up to users to decide on the suitability of the adhesive for different mirror backs and a particular application.