Welcome to Carlisle HVAC
Manufacturer of Hardcast, Gripnail and DynAir brands.
Rolled Mastic Duct Sealants
Don’t tape it. Seal it.
High-performance, True Zero-VOC rolled mastics that effectively seal duct work for the life of the system. Ideal for change outs or installations.
Mastic Duct Sealants
Engineered to Perform. Certified to Protect.
Wide range of fiber reinforced, or non-reinforced water and solvent based liquid sealants that are manufactured to meet and exceed the minimum UL-181 requirements.
Duct Hardware & Accessories
Increase performance and efficiency.
Balance airflow effectively while reducing noise and vibration with high quality, easy to install duct hardware from DynAir.
Product & Solutions Guide
2026 Edition Now Available
Browse offline or print our portfolio of leading Hardcast, Gripnail and Dynair products—in the latest edition of our universal guide.
Preserving History with Modern Solutions
Kountze Memorial Lutheran Church in Omaha, Nebraska, is a historic landmark requiring careful preservation of its stained glass, organ, and intricate interiors. During a major $1.4 million renovation, maintaining indoor air quality was critical to protect these features. Partnering with Midlands Duct Cleaning, the team used Carlisle’s RE-500 sealant to restore aging air handlers and ductwork. The results included dramatically improved air quality, reduced operating costs, and easier long-term maintenance—completed ahead of schedule.
Read on to see how RE-500 delivered lasting protection.
An Industry
Leader
Since 1965
60+ Years of Delivering Quality HVAC Solutions
Purpose-built for Installations and Change-Outs
Engineered for Energy-Efficiency and Indoor Air Quality
Trusted by Mechanical Contractors and Duct Fabricators