

🛠️ Seal the deal with Hardcast—where precision meets power!
Hardcast 304156 is a 1-gallon, silicone-based duct sealant designed for HVAC professionals seeking a reliable, easy-to-apply solution. Its compact liquid form ensures quick setting and strong adhesion, making it the go-to choice for airtight, durable duct sealing.
| Brand | Hardcast |
| Item Form | Liquid |
| Item Weight | 4.8 Kilograms |
| Material | Silicone |
| Style | Compact |
| Water Resistance Level | Not Water Resistant |
J**N
Best stuff
Works perfectly
S**F
Cool
👍
S**G
Great stuff
I needed this to seal some rooftop duct work it worked just as good now as it did 20 years ago when I was doing HVAC. it was listed at a fair price
H**T
Wonderful quality
Wonderful quality , easy to apply
T**S
ease.
great stuff, easy to apply.
J**R
Five Stars
good sealer and prevents air leaks .
Trustpilot
3 days ago
2 days ago
2 months ago
4 days ago