Please ensure Javascript is enabled for purposes of website accessibility

DYNAFLEX 230® Premium Elastomeric Sealant

  • Best For:
  • Window/Door/Siding

"Silicone Tough" latex sealant that offers outstanding exterior performance against the elements. Developed for flexibility and crack proof performance, this sealant endures expansion and contraction without cracking or losing its seal.

Key Features
  • Paintable in 2 Hours
  • 100% Waterproof & Weatherproof Seal
  • Exceeds ASTM C920, Class 25


  • Details
  • SKU Code Unit Size Color Dimensions Weight Case Pack Cases/Pallet
    7079818275 18300 10.1 FL OZ WHITE 8x6x12 13.1 lbs. 12 108
    7079818280 18280 10.1 FL OZ BLACK 8x6x12 12.8 lbs. 12 108
    7079818286 18301 10.1 FL OZ GRAY 8x6x12 12.85 lbs. 12 108
    7079818288 18306 10.1 FL OZ ALMOND 8x6x12 12.85 lbs. 12 108
    7079818304 18305 10.1 FL OZ CLEAR 8x6x12 10.01 lbs. 12 108
    7079818412 18412 10.1 FL OZ CEDAR TAN 8x6x12 12.9 lbs. 12 108
    7079818416 18416 10.1 FL OZ CLAY 8x6x12 13 lbs. 12 108
    7079818418 18302 10.1 FL OZ BROWN 8x6x12 12.9 lbs. 12 108
    7079818420 18303 10.1 FL OZ DARK BRONZE 8x6x12 12.9 lbs. 12 108
    7079818972 18305 10.10 FL OZ CLEAR 6.13x4.38x11.75 4.9 lbs. 6 183
    7079818976 18285 5.50 FL OZ WHITE 7.5x7.5x10.125 5.28 lbs. 9 120


  • Technical Data
  • How long is the shelf life on this product?

    A minimum of 12 months from the date of production in an unopened tube

    Can I use this in a shower?

    No. The product is not applicable for use in a bath or shower.

    Is this a paintable silicone caulk?

    No, DYNAFLEX 230 is a latex base caulk that performs to many of the same standards as a silicone sealant

    Is there any silicone in this caulk?

    No, there is no silicone in DYNAFLEX 230.

    Why offer a sealant designed for windows, doors & trim?

    Windows, doors and trim are among the top applications for sealant for both Pros and DIYers. Many times consumers choose acetoxy silicone technology for exterior applications on these projects, however DYNAFLEX 230® meets performance standards of acetoxy silicone with the added benefits of being paintable, low odor, easy to tool and easy to clean up with soap and water. It is engineered with increased elongation by 33% to deliver increased toughness for outstanding performance against the elements.

    What does “Silicone Tough” mean?

    Based on laboratory testing, DYNAFLEX 230® delivers the performance characteristics of acetoxy silicone, but with all of the advantages of a latex sealant (paintable, low odor, easy to tool and easy to clean up with soap and water). Beyond meeting the ASTM C920 Class 25 test standard (demonstrating over 50% total joint movement in extreme temperatures), the DYNAFLEX 230® also meets the same stress/strain tests as acetoxy silicone.

    What is “Composite” molding and why is it important?

    The term “composite” is a term used to describe synthetic building materials (including polystyrene, MDF and others). The synthetic building materials market is a $3 billion industry and is growing quickly, especially with molding and trim. Usage of composite and PVC trimboard has become common, and few sealants are able to claim compatibility with this category of materials.

    What colors does DYNAFLEX 230® come in?

    DYNAFLEX 230® comes in a wide variety of colors to match the most popular colors of exterior siding and trim. Colors include: white, clear, almond, gray, clay, cedar tan, brown, bronze and black.

Where To Buy

Resources + Support


Find Resources

Find what you need for your next job or project.

Search Resources

Customer Support

Our team of highly trained customer support staff is here to help with either product or project advice.

Contact Us