Nu-calgon NUCAL-4369-75 Spray Adhesive 12 Oz Duct Liner

Product Description

The NU-CALGON NUCAL-4369-75 is a wide-web spray adhesive formulated for insulation and duct liner applications in HVAC systems. Delivered in a 12-ounce aerosol can, this high-solids adhesive bonds effectively to uneven and porous surfaces where standard adhesives may fail. The formula is waterproof, flexible, and transparent, and it leaves no staining. It supports both temporary and permanent bond configurations depending on application technique. The product contains no chlorinated solvents and is formulated to avoid ozone-depleting compounds. It withstands heat up to 120 degrees F inside ductwork, making it suitable for lined duct assemblies exposed to normal system operating temperatures. HVAC technicians and sheet metal installers are the primary users of this product.

This adhesive is designed for duct liner and insulation installation in residential and commercial HVAC systems. It is also suitable for bonding leather, cardboard, most plastics, and cloth where a flexible, transparent, and nonstaining bond is required. The wide-web spray pattern provides even coverage across broad or irregular surfaces, reducing waste and improving adhesion consistency on porous substrates. Not intended for use on vinyl. Residue cleans up with a degreasing solvent such as mineral spirits.

Key Features

• Formulated specifically for insulation and duct liner applications
• High-solids formula bonds to uneven and porous surfaces
• Waterproof and flexible bond supports thermal movement in ductwork
• Transparent and nonstaining finish leaves no visible residue
• No chlorinated solvents — free of ozone-depleting compounds
• Heat-resistant up to 120 degrees F for in-duct use
• Cleans up with mineral spirits or degreasing solvent

Compatibility

Designed for use on insulation, duct liner, leather, cardboard, most plastics, and cloth. Not compatible with vinyl substrates.

Installation Notes

This product is typically applied by HVAC technicians and sheet metal installers during duct fabrication or lining replacement. Ensure adequate ventilation when spraying in confined spaces, as aerosol adhesives produce flammable vapors. Shut down the air handling system before applying inside ductwork to prevent vapor circulation. Do not apply to vinyl or use where operating temperatures will exceed 120 degrees F.

Technical Specifications

• Type: Adhesive
• Form: Aerosol Spray
• Volume: 12 oz
• Color: Straw
• Maximum Temperature: 120 degrees F
• Solvents: No chlorinated solvents

Standard Information

• Brand: NU-CALGON
• Manufacturer Part Number: NUCAL-4369-75