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🖤 Seal it like a pro—weatherproof your world with Dynaflex 230!
DAP 18280 Dynaflex 230 is a premium black elastomeric sealant designed for both indoor and outdoor use. Featuring advanced latex technology, it delivers excellent adhesion and a watertight, weatherproof seal with a tensile strength of 800 psi. This 10.1 fl oz liquid sealant cures fully in 24 hours and meets Federal Spec TT-S-00230C and ASTM C 920 standards, making it a trusted choice for professional and DIY weatherization projects. Sold in a convenient 12-pack, it ensures you’re always ready to tackle sealing jobs with confidence.





| ASIN | B0166MG7OS |
| Best Sellers Rank | #2,052 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #123 in Adhesive Caulk #19,070 in Hardware |
| Brand | DAP |
| Brand Name | DAP |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 1,036 Reviews |
| 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 |
| Model | 18280 |
| Number of Items | 12 |
| Part Number | 18280 |
| Surface Recommendation | Miscellaneous |
| Tensile Strength | 800 psi |
| UPC | 070798182806 |
| Unit Count | 12 Count |
| Water Resistance Level | Waterproof |
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