Carlisle Hardcast 309501 Seam Tape 3 in X 100 Ft Roll

Product Description

The CARLISLE HARDCAST 309501 is a seam tape designed for sealing and joining ductwork and related HVAC components. This tape provides a durable, airtight seal at duct seams and connections, helping maintain system efficiency and reducing air leakage in both supply and return air pathways. Supplied in a 3-inch wide by 100-foot roll and weighing 5.75 pounds, it is suited for high-volume installation work where consistent coverage is critical. HVAC technicians and sheet metal contractors rely on this tape as part of a compliant duct sealing approach on residential and light commercial projects.

This seam tape is applied at duct joints, longitudinal seams, and fitting connections in forced-air HVAC systems. It is appropriate for use during new duct installation or when retrofitting and sealing existing ductwork. The 100-foot roll length reduces the need for frequent roll changes during continuous runs, making it practical for multi-zone or whole-building duct work. Projects requiring code-compliant duct sealing per mechanical codes will typically call for a listed seam tape of this type.

Key Features

• 3-inch width provides broad coverage across duct seams and fitting laps
• 100-foot roll length reduces interruptions during large duct runs
• Designed to create an airtight seal at duct joints and connections
• Appropriate for residential and light commercial HVAC duct sealing applications
• Roll format is easy to handle and apply in tight mechanical spaces

Compatibility

Designed as an OEM-style seam sealing tape for use with standard sheet metal, flexible, and rigid fibrous ductwork assemblies in forced-air HVAC systems.

Installation Notes

Seam tape of this type is typically installed by licensed HVAC technicians or sheet metal workers. Before applying, ensure all duct surfaces are clean, dry, and free of dust, grease, or loose debris to promote proper adhesion. Power down the air handling unit and verify airflow has stopped before working inside duct systems. Installation should conform to applicable mechanical codes such as the IMC or SMACNA duct construction standards for the jurisdiction.

Technical Specifications

• Width: 3 inches
• Roll Length: 100 feet
• Weight: 5.75 pounds
• Order Increment: 1

Standard Information

• Brand: CARLISLE HARDCAST
• Manufacturer Part Number: 309501