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🔧 Seal the deal with DAP Dynaflex 230 – where durability meets precision!
DAP 18280 Dynaflex 230 is a premium 10.1 fl oz black elastomeric latex sealant designed for both indoor and outdoor use. It offers excellent adhesion and a watertight, weatherproof seal, meeting rigorous Federal and ASTM specifications, making it ideal for professional-grade sealing projects.





| ASIN | B0166MG7OS |
| Best Sellers Rank | #85,388 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #236 in Adhesive Caulk #39,722 in Hardware |
| Brand Name | DAP |
| Color | WHITE |
| Customer Reviews | 4.6 4.6 out of 5 stars (77) |
| Full Cure Time | 24 Hours |
| Included Components | Item |
| Item Form | Liquid |
| Item Weight | 12 Pounds |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | DAP PRODUCTS INC |
| Material Type | Silicone |
| Surface Recommendation | Miscellaneous |
| Tensile Strength | 800 Pounds Per Square Inch |
| UPC | 070798182806 |
| Unit Count | 12.00 Count |
| Water Resistance Level | Waterproof |
C**E
Good product
I use this for driveway cracks. It works better for me than the tar stuff and cracks less with time. BUT..... it must stay dry for at least 24 hours preferably 48 hours after application! Easy to work with and blends with the asphalt driveway. Survives the winter plowing better than other products I've tried. Spring repairs are easier with this stuff.
B**P
Great quality
Used this around all of my exterior windows and doors works great
S**.
Great to work with!
I find that most dark colored caulking is very difficult to work with as it is more sticky. Not this one! Great adhesion but also easy to clean up. A little pricey but difficult to find elsewhere in black.
J**F
Great caulk
Cut your angle needed and start applying your caulk above 40 degrees. I use it mainly for painted sheet steel with rivets along the seem. It applies smooth no hang ups or air pockets to spit. It has good elasticity for the movement needed for my panel seems. I will be buying again.
D**F
As Advertised.
Truly waterproof AND paintable! I'm a former contractor (retired handyman now) so I've had my share of bad experiences with caulks. 🙄
Z**B
Works great.
Great quality.
K**T
GREAT PRICE
love the DAP brand. these were perfect as we just replaced 22 windows and needed a lot of product.
K**N
Used DAP
Every DAP tube in the set was partially used so it was not a complete set.
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