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🛠️ Seal your spot in the elite marine club with TDS SIS 440 – where performance meets perfection!
The Teakdecking Systems SIS 440 is a premium 10.3oz marine caulk cartridge formulated with a one-part silane polymer. It offers superior UV and chemical resistance, excellent flexibility without primer, and a clean finish for teak deck seams 3-10.3mm wide. This waterproof, sandable sealant cures fully in 7 days and meets ASTM C920 standards, making it a trusted choice for professional marine applications.










| ASIN | B00CFN1LFS |
| Best Sellers Rank | #39,159 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #120 in Adhesive Caulk |
| Brand | Teakdecking Systems |
| Brand Name | Teakdecking Systems |
| Color | Black |
| Customer Reviews | 4.3 out of 5 stars 141 Reviews |
| Full Cure Time | 7 days |
| Included Components | 1 x SIS440 Marine Caulk Cartridge (10.3 oz) |
| Initial Hardening Time | 40 minutes |
| Item Form | Paste |
| Item Highlight | Premium quality, first class appearance, UV & chemical resistant, non-corrosive, ideal for boats and yachts |
| Item Weight | 16 ounces |
| Liquid Volume | 10 fluid ounces |
| Manufacturer | TDS |
| Material Type | Other |
| Maximum Gap Fill | 10 millimeters |
| Model | TDS300BL |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | TDS300BL |
| Surface Recommendation | Window |
| Tensile Strength | 300 psi |
| UPC | 616641416997 |
| Unit Count | 10.3 Fluid Ounces |
| Water Resistance Level | Waterproof |
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