Boss Products 37002 Black Silicone Hvac Caulk Sealant

Product Description

The BOSS PRODUCTS 37002 is a one-component acetoxy silicone adhesive and sealant packaged in a standard caulking cartridge. It cures to a tough, flexible, rubbery solid when exposed to ambient moisture in the air. Designed for HVAC applications, it forms a weatherproof, durable seal on ductwork, pipes, vents, and fixtures across a temperature range of 35 to 140 degrees F. The paste consistency allows for easy tooling and gap-filling on both flat and irregular surfaces. It is VOC compliant and manufactured in the USA. HVAC technicians, plumbers, and sheet metal contractors reach for this product when sealing leaks or gaps in heating, ventilating, and air conditioning systems.

The 37002 is suited for residential and light commercial HVAC installations where a reliable, flexible sealant is required. It adheres to a wide range of substrate types, making it useful for sealing around duct joints, pipe penetrations, vent collars, and fixture gaps. It performs on glass, metal, wood, ceramic, plastic, and silicone resin surfaces, which makes it versatile across multiple trade applications beyond duct sealing alone. Fast cure time supports efficient job-site workflow.

Key Features

• One-component acetoxy silicone formula cures on exposure to air moisture — no mixing required
• Temperature-rated from 35 to 140 degrees F for HVAC system environments
• Adheres to metal, glass, wood, ceramic, plastic, and silicone resin surfaces
• Weatherproof seal resists moisture intrusion around ducts, pipes, vents, and fixtures
• VOC compliant formulation meets applicable regulatory requirements
• Meets ASTM C-920-86, TT-S-001543A, TT-S-00230C, and ISO standards
• Made in USA

Compatibility

Designed for use on HVAC ductwork, pipe penetrations, vents, and fixtures. Compatible substrates include metal, glass, wood, ceramic, plastic, and silicone resin surfaces in general heating, air conditioning, and ventilating applications.

Installation Notes

This product is typically applied by HVAC technicians, sheet metal workers, or plumbers using a standard caulking gun. Surfaces should be clean, dry, and free of dust, oil, and loose material before application. Power down any air handling equipment before sealing duct sections to allow safe access and proper curing. Allow adequate cure time before restoring airflow to the system.

Technical Specifications

• Type: Silicone (Acetoxy, One-Component)
• Color: Black
• Form: Paste
• Container Type: Caulking Cartridge
• Temperature Rating: 35 to 140 degrees F
• Applicable Standards: ASTM C-920-86, TT-S-001543A, TT-S-00230C, ISO, ASC
• VOC Compliant: Yes
• Country of Origin: USA

Standard Information

• Brand: BOSS PRODUCTS
• Manufacturer Part Number: 37002