






🔧 Seal smart, seal strong — the pro’s choice for flawless HVAC performance!
The Red Devil 0841DX F-Seal is a 1-gallon, fiber-reinforced, water-based duct sealant certified to UL 181 a-m & b-m standards. Designed for all HVAC duct types, it offers a durable, flexible seal suitable for both interior and exterior use. Made in the USA, this gray silicone-based sealant combines professional-grade performance with eco-conscious formulation.




| Manufacturer | Red Devil |
| Part number | 0841DX |
| Item Weight | 5.67 Kilograms |
| Product Dimensions | 17.78 x 17.78 x 20.32 cm; 5.67 kg |
| Item model number | 0841DX |
| Size | 1 Gallon |
| Color | Gray |
| Style | 1 - Pack |
| Finish | Brushed |
| Material | Silicone |
| Shape | Rectangular |
| Power source type | Hand_powered |
| Item Package Quantity | 1 |
| Included components | Duct Sealant |
| Batteries Required? | No |
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