

💧 Seal smart, work clean — the future of duct sealing is here!
The Hardcast 304132 Flex-Grip 550 is a 1-gallon, water-based duct sealant designed for professional HVAC applications. Weighing 7.5 pounds, this gray liquid sealant offers strong adhesion across multiple surfaces while providing durable water resistance. Its eco-friendly, low-odor formula ensures a clean, efficient sealing process, making it a trusted choice for maintaining airtight duct systems.
| Material | Hardcast |
| Brand | Hardcast |
| Style | Compact |
| Item Weight | 7.5 Pounds |
| Water Resistance Level | Water Resistant |
| Item Form | Liquid |
| UPC | 063853280005 |
| Unit Count | 1 Count |
| Number of Items | 1 |
| Color | gray |
| Surface Recommendation | [Multiple] |
| Manufacturer | Hardcast |
| Part Number | 304132 |
| Item Weight | 7.5 pounds |
| Package Dimensions | 8.9 x 7.72 x 7.72 inches |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
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