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🛠️ Seal smarter, not harder — the pro’s putty for every project!
RectorSeal 81880 Duct Seal Compound is a gray, soft, non-toxic putty designed for professional-grade sealing on clean, dry surfaces. It forms a durable, air- and water-tight seal resistant to water, alcohol, and mild acids, while being safe for plastics, metals, and skin. Easily hand-molded and reusable, it works across HVAC, plumbing, electrical, and general construction applications, and can be painted immediately without bleed-through. Trusted by tradesmen for its superior formula and versatility.









| ASIN | B008A3UG94 |
| Best Sellers Rank | #4,903 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #35 in Hardware Sealers |
| Brand Name | Rectorseal |
| Color | Gray |
| Compatible Material | Metal |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,475) |
| Global Trade Identification Number | 00021449818803 |
| Included Components | Duct Seal Compound |
| Item Dimensions | 16.5 x 7.6 x 7.6 centimeters |
| Item Form | Putty |
| Item Type Name | Duct Seal Compound |
| Item Weight | 0.45 Kilograms |
| Manufacturer | The Rectorseal Corporation |
| Material Type | Silicone |
| Model | 81880 |
| Number of Items | 1 |
| Part Number | 81880 |
| Style Name | Industrial |
| Surface Recommendation | Various surfaces |
| UPC | 021449818803 |
| Unit Count | 16 Grams |
| Water Resistance Level | Water Resistant |
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