Duct sealant
STC duct sealant is specially formulated for HVAC systems, air ducts, and ventilation applications. Designed for both residential and commercial use, the ductwork sealant provides excellent adhesion to metal, aluminum, and other surfaces. This HVAC sealant is high-temperature resistant, waterproof, and flexible, ensuring long-lasting performance while preventing air leaks and energy loss. Non-toxic and low-VOC, it is safe for indoor use and easy to apply. Ideal for sealing joints, repairing air ducts, and maintaining efficient airflow, this air duct sealant is the professional choice for contractors and DIY enthusiasts looking for durable and reliable ductwork solutions.
Key Features of duct sealant:
- Excellent adhesion to metal, aluminum, and other surfaces
- High temperature & fire-resistant
- Waterproof & moisture-proof
- Non-toxic, low VOC formulation
- Flexible & long-lasting seal
Specification of ductwork sealant
| Specification | Details |
|---|---|
| Product Type | HVAC / Air Duct Sealant |
| Material | Acrylic-modified silicone / Rubberized compound |
| Color | Gray / White |
| Temperature Range | -30°C to 150°C (-22°F to 302°F) |
| Application | Metal ducts, ventilation systems, HVAC units |
| Shelf Life | 24 months (unopened) |
| VOC Content | <50 g/L |
| Packaging | 300ml cartridge / 600ml cartridge / Bulk |
| Storage | Cool, dry place away from direct sunlight |
How to Use duct sealant
- Clean the surface thoroughly, ensuring it is dry and free of dust, oil, or rust.
- Cut the tip of the cartridge and insert into a caulking gun.
- Apply the sealant evenly along the joints, seams, or cracks.
- Smooth the surface with a spatula or wet finger for a clean finish.
- Allow to cure completely (usually 24 hours) before painting or handling.
Packing
- 300ml cartridge
- 600ml cartridge
- Bulk packing available for industrial use
Storage
- Store in a cool, dry place away from direct sunlight
- Keep container tightly closed when not in use
- Do not expose to freezing temperatures
Precaution
- Avoid contact with eyes and skin
- Keep out of reach of children
- Use in a well-ventilated area
- Wear gloves if needed during application
- Do not ingest
FAQ
Q1: Is this sealant suitable for outdoor use?
A1: Yes, it is waterproof and can withstand outdoor conditions, but prolonged exposure to direct sunlight may reduce lifespan.
Q2: How long does it take to cure?
A2: Typically, it takes 24-48 hours for full curing at room temperature.
Q3: Can it be painted over?
A3: Yes, once fully cured, it can be painted with standard interior or exterior paint.
Q4: Can I use it on plastic ducts?
A4: It works best on metal and concrete surfaces. Adhesion to plastics may vary.
No more nails
weatherproof sealant
