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AC-20® +Silicone

AC-20® +Silicone


is a pure acrylic latex sealant for general purpose interior and exterior caulking in architectural applications where slight to moderate movement is anticipated. Formulated with the highest quality ingredients including a silicone additive for greater adhesion and weatherability, AC-20 is completely compatible with premium-grade latex and oil paints and will not stain adjacent surfaces. AC-20 has superb color stability and resistance to ultraviolet rays, ozone and airborne contaminants. It is mildew resistant and has United States Department of Agriculture acceptance for use in meat and poultry processing plants. In addition to the substrates listed above, AC-20 is compatible with polystyrene, polyurethane, cork, foamed and fibrous glass and gypsum board.


  • The sealant must be protected from water for 24 hours after application; do not caulk outdoors when rain is imminent.

  • Windows must be properly weeped since entrapped water could cause reversion. Sealant must be given additional time to fully cure before windows are installed because of the closed-in conditions.

  • Installed sealant shall not be subjected to repeated exposure of aggressive cleaning or disinfecting compounds.

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