181 DUCT SEALANT FIBERED
Premium Water-Based Mastic for HVAC Systems
Seal and Insulate Your HVAC Ducts with 181 DUCT SEALANT from Vapco Products. This high-quality,professional-grade mastic is designed for use on all types of metal ductwork, flex duct, and fiberglass duct board. Its water-based formula is nonflammable and safe for both indoor and outdoor applications.
Key Features and Benefits:
- LEED EQ 4.1 Compliant: Contributes to healthier indoor air quality.
- Excellent Flexibility: Accommodates movement and vibration in HVAC systems.
- Superior Adhesion: Forms a strong, durable seal to prevent air leaks.
- Mold and Mildew Resistant: Helps maintain a clean and healthy environment.
- Low VOC: Minimizes harmful emissions for a healthier indoor environment.
Ideal for:
- Sealing metal ductwork
- Sealing flex duct
- Sealing fiberglass duct board
- Low and high-velocity HVAC systems
Ensure optimal performance and energy efficiency in your HVAC system with 181 DUCT SEALANT from Vapco Products. Order yours today!
Part Number; Size
- 181DS-G 1 gallon 2/cs (Grey Fibered)
- 181DS-GE 1 gallon (Grey Fibered)
- 181DS-W 1 gallon 2/cs. (White Fibered)
- 181DS-WE 1 gallon (White Fibered)
Seal Your HVAC Ducts with Precision for Optimal Performance
Rigid Fiberglass Air Duct:
- Assemble Sections: Follow the manufacturer’s instructions to connect the fiberglass air duct sections.
- Apply Base Coat: Apply a 3-inch wide, 10-mil thick band of duct sealant to the duct board.
- Embed Fiberglass Scrim: Place a 5-mil fiberglass scrim with a 20×10 weave into the wet sealant.
- Apply Top Coat: Apply another 10-mil coat of duct sealant over the embedded scrim.
Flexible Air Duct/Metal Duct Application:
- Prepare Joints: Using a brush or putty knife, apply duct sealant to a minimum thickness of 20 mils to the male section of the spiral duct or to both fittings in a rectangular duct.
- Join Sections: Quickly join the sections while the sealant is wet (within approximately 15 minutes).
- Secure with Screws: Secure the joint using sheet metal screws placed as close to the joint head as possible (approximately 1/2 inch or less).
- Seal Exterior: Apply a 3-inch band of duct sealant to the outside of the assembled joint, covering the head and sheet metal screws.
- Allow to Set: Let the sealant set for approximately 48-72 hours.
- Pressure Test: After the sealant has set, pressure test the system for leaks to ensure a tight seal.
Tips for Optimal Results:
- Follow Manufacturer’s Instructions: Always refer to the specific instructions provided by the duct sealant manufacturer.
- Work Quickly: For flexible duct and metal duct applications, ensure prompt joint assembly while the sealant is wet.
- Use Quality Sealant: Choose a high-quality duct sealant designed for the specific application.
- Properly Secure Screws: Ensure that the sheet metal screws are securely fastened to prevent leaks.
DANGERS & PRECAUTIONS:
Read and understand the product’s label and Safety Data Sheet. Do not mix with strong acids. Prevent from freezing. Avoid excessive inhalation of vapors. Do NOT handle or use this product until all safety precautions have been read and understood. Keep out of the reach of children. Provide general, adequate ventilation. If used as a spray or airborne, a respirator may be needed. Wear safety glasses. Wash hands thoroughly after handling.
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SDS
181 DUCT SEALANT SDS -Download
Identification & Supplier Details
| Product Name (GHS Identifier) |
181 Duct Sealant |
| Product Number / Brand |
181DS-G, 181DS-GE, 181DS-W, 181DS-WE / Vapco |
| Recommended Use |
O2 tight duct sealant |
| Supplier Name / Address |
Vapco Products, Inc. / 401 Marshall Road, Valley Park, Missouri 63088, United States |
| Telephone / Email |
(636) 923-2121 / [email protected] |
| Emergency Phone Number |
(800) 255-3924 |
Hazard Identification & Composition
| GHS Classification (OSHA) |
Not a hazardous substance or mixture. |
| Signal Word / Pictograms |
Not applicable. |
| Hazard Statement(s) |
Not applicable. |
| Ingredients of Unknown Toxicity |
60% of the product contains chemicals of unknown toxicity. |
Hazardous Components (by Disclosure)
| Chemical Name |
CAS No. |
Concentration (% weight) |
| NJTS-50078-NCD |
N/A |
10 – 30 % |
Physical & Chemical Properties
| Physical State / Appearance |
Liquid / Caulk material |
| Color / Odor |
Grey or white / Mild to no odor |
| Flash Point |
>200°F (93°C) |
| Kinematic Viscosity |
280,000 cPs |
| Solubility in Water |
Soluble in water |
| Density and/or Relative Density |
1.31 |
| Evaporation Rate |
<0.8 (Slow) |
Stability & Reactivity
| Reactivity / Chemical Stability |
Stable under normal conditions of use. No hazardous reactions known. |
| Conditions to Avoid |
Do not mix with strong acids. |
| Incompatible Materials |
None known. |
| Hazardous Decomposition Products |
Carbon oxide(s). |
Toxicological Information
| Acute Toxicity / Symptoms |
Not established. Symptoms are generally mild: mild skin irritation (prolonged exposure), eye irritation, and blurred vision. |
| Skin/Eye Damage |
Causes mild skin irritation with prolonged exposure; causes eye irritation. |
| Sensitization / Respiratory Effects |
Causes gastrointestinal irritation. Aspiration hazard is not likely due to low vapor pressure. |
| Carcinogenicity / Mutagenicity / Reproductive Toxicity |
None known. |
First-Aid Measures
| General Advice |
If you feel unwell, seek medical advice (show the label). |
| If Inhaled |
Remove person to fresh air. Get medical advice/attention. |
| In Case of Skin Contact |
Immediately drench affected area with water for at least 15 minutes. Remove contaminated clothing. Obtain medical attention if irritation develops or persists. |
| In Case of Eye Contact |
Immediately rinse with water for at least 15 minutes. Remove contact lenses if present. Continue rinsing. Obtain medical attention if irritation develops or persists. |
| If Swallowed |
Rinse mouth. Do NOT induce vomiting. Obtain medical attention. |
Fire-Fighting & Accidental Release Measures
| Suitable Extinguishing Media |
Not usually needed. Use appropriate media for surrounding fire (dry chemical, foam, or CO2). |
| Specific Hazards (Fire) |
None available. Hazardous combustion products: Carbon oxide(s). |
| Firefighting Actions |
Exercise caution. Do not enter fire area without proper protective equipment, including SCBA. |
| Personal Precautions (Spill) |
Do not get in eyes, on skin, or on clothing. Use appropriate PPE. |
| Containment & Cleanup |
Contain spills with dikes or absorbents. Take up liquid spill into absorbent material. Transfer spilled material to a suitable container for disposal. |
Handling, Storage & PPE
| Precautions for Safe Handling |
Do not handle until all safety precautions have been read. Avoid contact with skin, eyes, and clothing. Wash hands before eating, drinking, or smoking. Do not pierce or burn containers. |
| Conditions for Safe Storage |
Store in a dry, cool, well-ventilated place away from ignition sources. Do not expose to temperatures exceeding 50°C/122°F. Store locked up. |
| Engineering Controls |
Ensure adequate ventilation. Emergency eye wash fountains and safety showers should be available. |
| Eye/Face Protection (PPE) |
Chemical safety goggles. |
| Skin/Body Protection (PPE) |
Wear protective gloves and clothing. |
| Respiratory Protection (PPE) |
Use a NIOSH-approved Self-Contained Breathing Apparatus whenever exposure may exceed established OELs. |
Transport & Regulatory Information
| DOT / IMDG / IATA Status |
Not dangerous goods. |
| California Proposition 65 |
Contains a chemical known to cause cancer and birth defects or other reproductive harm: NJTS-50078-NCD. |
| US EPA TSCA Inventory |
All chemicals are listed or exempt. |
Disposal & Ecological Information
| Product Disposal / Waste Treatment |
Dispose of contents/container in accordance with local, regional, national, and international regulations. This material, as supplied, is hazardous waste according to federal regulations (U.S. EPA 40CFR 261). |
| Persistence and Degradability |
Component(s) of this product are not biodegradable. |
| Bioaccumulative Potential |
Not expected to bioaccumulate. |
| Mobility in Soil |
This product is mobile in soil. |
Disclaimer & Preparation Information
| Prepared By |
Jessica Wilson |
| Date Prepared |
3-13-2025 |
| Disclaimer Summary |
Information is believed accurate but provided without warranty. Final determination of suitability is the sole responsibility of the user. Manufacturer is not responsible for loss, injury, or expense arising from improper use. |
| Key Codes |
N/A = Not applicable; N/D = Not determined |
