Diversitech DIVE-800-009 Pro-air Duct Sealant 1 Gallon

Product Description

The DIVERSITECH DIVE-800-009 Pro-Air Duct Sealant is a water-based, fiber-reinforced mastic formulated for sealing metal, fiberglass duct board, and flexible duct systems. It is rated for use up to 10 inches of water column pressure without requiring fiberglass mesh reinforcement, making it suitable for a wide range of residential and light commercial HVAC applications. The formula meets UL Class 1 rating requirements and is designed for both indoor and outdoor installations. HVAC technicians rely on this sealant for long-term flexibility and adhesion across heating, ventilating, and air conditioning duct assemblies.

This sealant is appropriate for use on metal duct systems, fiberglass duct board systems, and flex duct systems in both indoor and outdoor environments. It is commonly applied during new HVAC installations and duct remediation work where airtight sealing is required at joints, seams, and connections. The 1-gallon pail provides sufficient volume for larger commercial jobs or multiple residential service calls without frequent reordering.

Key Features

• Water-based, fiber-reinforced mastic for strong, flexible duct sealing
• Rated up to 10 inches of water column pressure without mesh reinforcement
• Meets UL Class 1 rating and applicable local code requirements
• Suitable for metal duct, fiberglass duct board, and flex duct systems
• Formulated for both indoor and outdoor use
• Provides long-term flexibility and durability after cure

Compatibility

Designed for use on metal heating and ventilating ducts, fiberglass duct board systems, and flexible duct systems in residential and commercial HVAC applications.

Installation Notes

This product is typically installed by licensed HVAC technicians during duct fabrication, system installation, or duct sealing remediation. The system should be depressurized and power to the air handler shut off before applying sealant at joints and seams. Apply with a brush or gloved hand to all accessible joints, seams, and connections, and allow adequate cure time before restoring system operation. Follow local mechanical codes and manufacturer application guidelines for surface preparation and coverage rates.

Technical Specifications

• Product Type: Duct Sealant Mastic
• Volume: 128 oz. (1 Gallon)
• Pressure Rating: Up to 10 inches of water column
• Base Formula: Water-based, fiber-reinforced
• Listing: UL Class 1
• Application Environment: Indoor and Outdoor

Standard Information

• Brand: DIVERSITECH
• Manufacturer Part Number: DIVE-800-009