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50+ Years
experience
Premium Air Duct Sealants Manufacturer
RCD Corporation has been a trusted leader in manufacturing water-based air duct sealants since 1958. Our UL-listed products are designed to permanently seal leaks in HVAC systems, improving energy efficiency, indoor air quality, and comfort for residential and commercial buildings. With decades of industry experience, we specialize in creating environmentally friendly solutions that earn LEED credits and meet rigorous performance standards. Our product line includes fiber-reinforced mastics, weather barrier coatings, and spray adhesives tailored for diverse duct sealing applications. Backed by technical expertise and a commitment to sustainability, we provide professional contractors with reliable tools to reduce energy waste and carbon emissions.

Our team prioritizes innovation, offering patented formulations and application methods that simplify complex sealing challenges. From single-family homes to large-scale commercial projects, our solutions deliver long-term durability and compliance with environmental regulations. We maintain rigorous quality control to ensure every product meets exacting safety and performance benchmarks. As a U.S.-based manufacturer, we combine domestic production excellence with nationwide distribution capabilities. Our dedication to customer success is reflected in comprehensive technical support and educational resources for proper duct sealing practices.
Services
Air Duct Sealants Weather Barrier Coatings Spray Adhesives Fiberglass Mesh Reinforcement HVAC System Sealing
Details
  • Year established: 1958
Highlights and features
  • Over 60 years of specialized experience in duct sealing solutions
  • UL-certified products meeting strict safety standards
  • LEED-qualified environmentally friendly formulations
  • Patented fiber-reinforced mastic technology
  • Comprehensive technical support for professional contractors
Associations and certifications
  • UL Listed
  • LEED Credits
What people say
Energy savings Long-lasting seals Eco-friendly Technical expertise LEED qualified
Services
Air Duct Sealants
Our UL-listed mastic sealants permanently seal HVAC duct leaks in residential and commercial systems. Formulated for flexibility and durability, these water-based solutions reduce energy waste by preventing air infiltration through joints, seams, and connections. Professional contractors use them for sheet metal, fiberglass, and flexible duct applications.
Weather Barrier Coating
Bright white #15 Weather Barrier Coating protects exposed ductwork and insulation from environmental damage. Its 80% solar reflectance reduces heat gain while maintaining flexibility in extreme temperatures. This LEED-qualified coating extends service life of HVAC components in outdoor installations and commercial rooftops.
Spray Adhesive
#52 Spray Adhesive creates strong bonds between fiberglass insulation and metal surfaces. VOC-compliant formulation works with galvanized and aluminum sheet metal while eliminating need for bulk application equipment. Contractors use it for faster installations with reduced cleanup requirements.
Fiberglass Mesh Reinforcement
Glasscoat woven fiberglass mesh reinforces sealant joints in duct construction. Pressure-sensitive adhesive backing ensures proper adhesion while maintaining structural integrity. This reinforcement improves durability of sealed connections in both residential and commercial HVAC systems.
HVAC System Sealing
Comprehensive duct sealing solutions reduce energy consumption by eliminating air leaks in heating and cooling systems. Products meet EPA Energy Star recommendations for improving indoor air quality while lowering utility costs and carbon emissions in both new construction and retrofit projects.
Questions
What makes RCD sealants different from regular caulking?
Our UL-listed mastics use fiber reinforcement for superior flexibility and durability in HVAC systems compared to standard caulks.
Can I use RCD products for residential HVAC systems?
Yes, our sealants work for both residential and commercial ductwork, including home weatherization projects.
Are RCD products environmentally friendly?
Yes, our water-based formulations earn LEED credits and contain recycled materials in recyclable packaging.
How do I apply RCD mastic sealants?
Use brush, trowel, or spray equipment. Technical bulletins provide specific application instructions for each product.
Do RCD products work on all duct types?
Yes, our sealants work on sheet metal, fiberglass, flexible ducts, and ductboard per UL 181 standards.
What's the shelf life of RCD sealants?
Store in sealed containers at moderate temperatures. Refer to product data sheets for specific shelf life information.