Industrial adhesives and sealants is being widely used to improve quality, reliability, reduce costs while joining or sealing assemblies, joints. In this article we are discussing about how it can be useful for HVAC Industry. 

  • What is HVAC
  • Why HVAC Adhesives Sealants are required 
  • Applications & products

What is HVAC and how does it work?

Heating, Ventilation, and Air Conditioning. This is used to provide heating and cooling services to buildings. HVAC  has become the required industry standard for construction of new buildings.

How many types of HVAC are there?

There are four main types of HVAC systems. There are split systems, hybrid systems, duct-free systems, and packaged heating and air systems. Each of these units have pro’s and con’s, and knowing these factors can help you decide which is best for you.

What are the main components of a HVAC system?

  • Heat Exchanger. …
  • Blower Motor. …
  • Combustion Chamber. …
  • Condenser Coil or Compressor. …
  • Evaporator Coil. …
  • Thermostat

What is the purpose of HVAC system?

A Heating, Ventilation and Air Conditioning package, also known as HVAC system, removes contaminants in the air and conditions indoor air either cooling it or heating it to provide comfort. Air contains many pollutants. If you let it in to your home without purifying it, you or your family might end up getting sick.


Why Industrial Adhesives and Sealants are required?

 HVAC unit consists of engineering parts like Heat exchanger, Blower motor, Compressor, Coils, thermostat and etc. Engineering adhesives and sealants find applications for such mechanical parts for locking, sealing and bonding. Also that such heavy equipment generate vibrations and noise which needs to be addressed. So the need for vibration & sound dampening adhesives and sealants.
Furthar these engineering components are assembled, fabricated into packaged units and connected to complicated ducting systems.  These ducts finally terminate as grills etc hanging from pipes or fixed onto walls/ false ceilings. 
Efficiency of HVAC system largely depends upon how this air is sealed or that there are no air leakage losses. Air leakage loss implies more work for the engineering components – more energy consumption , more wear & tear. 


Industrial adhesives and sealants

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Applications and Products – HVAC adhesives sealants

Commercial and residential HVAC system require proven sealing, bonding and noise deadening systems. Manufacturers HVAC adhesives sealant technologies to bond, seal and soundproof metal bodies and frames in filter systems with EHS friendly and certified solutions, achieving thus cost-optimization and long-term results. 

Structural Adhesives 

Bond and seal metal bodies and to secure stiffeners on thin metal sheets, while providing a structural, weatherproof and vibration damping joint that can be over-painted.


  • Safe and long-term durable joints, Simplified assembly instead of mechanical fixtures.
  • Material savings due to the potential use of thinner metal sheets.
  • No corrosion caused by screw holes and rivets.
  • Damping of vibrations and noise

MS Polymer Adhesives 

strong adhesive MS Polymer adhesive & sealant is Low odor, ageing and weathering resistant, bonds well to a wide variety of substrates without the need for special pre-treatments. It is suitable for interior and exterior elastic sealing and bonding applications on substrates such as timber, glass, metals, metal primers, ceramic materials and plastics.


  •  General machinery, body and frame sealing and bonding
  •  Hygiene, ventilation and air conditioning systems
  • Store refrigerators and refrigerating rooms and trucks
  • Food processing and packaging machinery
  • Sealing and bonding in recreational vehicles

Duct Sealant 

HVAC Duct Sealant is a single component acrylic, high-performance water based sealant. 
Supex Duct Acrylic Sealant provides excellent strength, bonding and forms a strong seal against air leakage. The product is acrylic emulsion-based hence, eco-friendlier and paintable after full cure. 
Application areas : Sealing pipe joints,  Ductwork, Ductwork seams

Polyurethane Sealants 

Supex PU 25  is a single component polyurethane based elastomeric sealant / adhesive that was
design for industrial application. It can be painted. It forms a highly elastic, tear and weather resistant joint. It adheres without primer on substrates commonly used like wood, anodized aluminum, polyester, glass, concrete, baked clay, stone, ceramic tiles. Applications :
  • HVAC cabinet 
  • Truck and trailer sealing 
  • Adhesive for roof bows of truck and trailer
  • Refrigerated counter 

Polyurethane Foam Spray Gap Fill Sealants

Supex 100 PU foam spray sealants are used to fill large gaps. The HVAChvac adhesives systems that make a home comfortable create penetrations (openings) that can create drafts, making living spaces uncomfortable. These penetrations not only allow air to seep into and out of the home, but they also may be forcing equipments to work harder than they need to. 

Where to buy HVAC adhesives and sealants?

Anagha Engineers’ products are available across India through our distributor network. You can call / Whatsapp / SMS +91 9699892782 for quick response, best price and technical support. 

Sealing Ducts: What’s Better, Tape or sealant?

Most duct systems have numerous leaks that waste energy and lead to room-to-room pressure imbalances. 

All about sealants

Most energy-conscious architects seal duct joints with acrylic sealants. It is a water based sealant . Duct joints should always be secured with  sheet-metal screws before seams are sealed with mastic.

All about duct tape

Since common hardware-store duct tape — technically known as cloth-backed rubber-adhesive duct tape — fails quickly when used on ducts, most energy-conscious contractors seal duct joints with a sealant. Although Sealants works well on galvanized steel ductwork, it has its disadvantages: it is a little messy to apply.

Difference between acrylic sealant and silicone sealant

It’s important to know the differences between silicone and acrylic sealants, as well as their advantages. With all the information in front of you, you’ll be able to compare these two sealant types to one another before deciding on the one to use for your project.

One advantage acrylic sealant has over silicone sealant is paintability. Most paints can be used on acrylic sealants, which is not the case with silicone sealants. However, if the sealant is for your ductwork, there’s no real need for paint. Disadvantage of silicone is that it produces an unpleasant vinegar odour during curing, but there are also some odorless silicone options, however at higher cost.

Advantage of silicone sealants are more flexible and longer lasting than acrylic, and they do not have a volume shrinkage. Acrylic sealants have a major disadvantage in that they are water permeable. It’s advised that you not use acrylic in damp or humid places due to the risk of fungus / mould growth.

Duct Sealant & HVAC Adhesives & Sealants in India
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Duct Sealant & HVAC Adhesives & Sealants in India
HVAC System requires adhesive and sealants for bonding & sealing. Details of applications, product, advantages and limitations is mentioned in this article.
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Anagha Engineers
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