A package of SEALING COMPOUND CORDS, a non-hardening sealant for air and moisture protection

Sealing Compound Cords SCC-1

SEALING COMPOUND CORDS is the instant, professional-grade solution for sealing out air, dust, and moisture in HVAC/R, plumbing, and general maintenance. This is a highly specialized, non-staining sealer that is pre-shaped for mess-free, thumb-applied installation. Formulated from the highest quality raw materials, the compound remains flexible across extreme temperatures, ensuring a durable, permanent seal that won’t harden, shrink, or pull away over time.

SKU: SCC-1 Category: INSULATION Tags: air sealant, Dust Resistant, dust sealant, HVAC Sealant, moisture barrier, non-hardening., SCC-1, sealant, sealing compound, Sealing Compound Cords, Water Resistant, weatherproofing

Description
SDS

SEALING COMPOUND CORDS

Versatile and Durable Sealing Solution

Sealing Compound Cords are a specialized sealing and caulking compound formulated for use in demanding industrial, HVAC/R, and general maintenance applications where a conventional sealant would fail. This high-quality, non-staining compound is manufactured to offer an exceptional combination of flexibility, adhesion, and thermal stability. Its unique composition ensures it remains flexible at $-20^\circ\text{F}$ and exhibits no sag up to 350°F allowing for seamless use in extreme hot or cold environments without hardening, cracking, or losing seal integrity. The product’s 3/8 inch pre-shaped extruded cord format eliminates the need for messy tools—installation is clean, fast, and achieved simply by pressing the self-adhesive material into place with a thumb or forefinger. SCC-1 creates a reliable water and vapor-proof barrier, while its non-corrosive and odorless formula ensures compatibility and safety with all metal surfaces, including copper. It adheres instantly to virtually all clean, dry substrates, including metal, wood, glass, masonry, plastic, and rubber, making it an essential, all-purpose solution for permanently sealing leaks, plugging voids, and insulating critical components.

Key Features and Benefits:

Effective Sealing: Protects against air, dust, and moisture in hot and cold settings.
Versatile Applications: Suitable for sealing windows, air ducts, adaptors, and extensions.
No Tools Required: Easy to apply with fingers/thumbs.
Non-Hardening and Non-Staining: Maintains flexibility and appearance between -20°F and 350°F.
Odorless and Non-Corrosive: Safe for use in various environments.
Adheres to Most Surfaces: Compatible with metal, plastics, glass, and wood.

Ideal Applications:

HVAC: Seal window openings, air ducts, adaptors, extensions, small voids etc. to prevent energy-waisting air leaks. Seal out air, dust, moisture.
Refrigeration: Seal out air and moisture around tube entries/exits, under latch plates, under hinges, and over screw heads in refrigeration units and freezers.
General Maintenance: Plug holes, cracks, and small voids, seal long gaps; and provide non-staining sealing where the compound needs to be painted.

Part Number; Size

SCC-1 3/8″ X 25′ 12/cs

Directions:

Prepare Surface: Ensure the surface is clean and dry.
Removal: Cords are arranged between release papers so they can be uncoiled one at a time or the entire group can be unrolled.
Apply Sealant: Place the SEALING COMPOUND CORDS on the area to be sealed.
Press into Place: Use your thumbs to firmly press the sealant into place. Ensure it is pressed sufficiently to fill the opening and achieve solid adhesion to the surrounding area.

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SDS

⚠️ SEALING COMPOUND CORDS SDS – DOWNLOAD

1. IDENTIFICATION & SUPPLIER DETAILS

Product Name	Sealing Compound Cords
Product Number	SCC-1
Brand	Vapco
Recommended Use	A non-hardening sealer used to seal against water, dust and air intrusion. Also used for sound deadening applications.
Supplier	Vapco Products, Inc. 401 Marshall Road, Valley Park, Missouri 63088, United States
Telephone / Fax	(636) 923-2121 / (636) 923-3002
Emergency Phone	(800) 255-3924

2. HAZARD IDENTIFICATION & COMPOSITION

GHS Classification	Eye damage/irritation, Cat. 2B; Specific target organ toxicity (repeated exposure), Cat. 2
Signal Word	WARNING
Hazard Statements	H313: May be harmful in contact with skin; H320: Causes eye irritation; H373: May cause damage to organs (lungs) through prolonged or repeated exposure.
Precautionary Statements	P260: Do not breathe dust/fume/gas/mist/vapors/spray; P264: Wash hands thoroughly after handling; P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes; P314: Get medical advice if you feel unwell.

Hazardous Components	CAS No.	Concentration
Limestone	1317-65-3	70 – 80 % (weight)
1-Propene, 2-methyl-, homopolymer	9003-27-4	1 – 10 % (weight)

3. PHYSICAL & CHEMICAL PROPERTIES

Physical State & Appearance	Solid, Putty-like solid (Off-white)
Odor	Faint, mild odor
Density	1.78 g/cm3
Decomposition Temp	>200°C (392°F)
Flammability	Not classified as a flammable hazard
Solubility / pH	N/D / N/D

4. STABILITY & REACTIVITY

Chemical Stability	Stable under normal conditions of storage and use.
Reactivity	Not reactive.
Conditions to Avoid	None known.
Incompatible Materials	Avoid contact with strong oxidizers.
Hazardous Decomposition	Carbon oxide(s), isobutene and other combustion products are possible.

5. TOXICOLOGICAL INFORMATION

Acute Toxicity	Limestone: LD50 Oral 6450 mg/kg; Homopolymer: LD50 Oral >34600 mg/kg, Dermal >10250 mg/kg, Inhalation 17.3 mg/L.
Eye Contact	Causes eye irritation.
STOT – Repeated Exposure	May cause damage to organs [lungs] through prolonged or repeated exposure.
Carcinogenicity / Mutagenicity	Not classified based on available information.

6. FIRST-AID MEASURES

Inhalation	Remove person to fresh air. Keep at rest in a position comfortable for breathing. Get medical advice.
Skin Contact	Drench affected area with water for at least 15 minutes. Remove contaminated clothing. Obtain medical attention if irritation persists.
Eye Contact	Immediately rinse with water for at least 15 minutes. Remove contact lenses. Obtain medical attention if irritation persists.
Ingestion	Rinse mouth. Do NOT induce vomiting. Obtain medical attention.

7. FIRE-FIGHTING & ACCIDENTAL RELEASE MEASURES

Extinguishing Media	Water spray, fog, CO2, alcohol-resistant foam, dry chemical, or sand.
Firefighting Protection	Wear NIOSH-approved SCBA with full body protective clothing. Fight fire remotely due to risk of explosion.
Spill Containment	Ventilate area. Contain spills with dikes or absorbents. Eliminate all ignition sources. Transfer to suitable container for disposal.
Environmental Precautions	Prevent entry to sewers and public waters. Avoid release to the environment.

8. HANDLING, STORAGE & PPE

Handling Procedures	Avoid contact with skin and eyes. Wash hands with mild soap before eating or smoking. Do not pressurize or weld containers.
Storage Conditions	Store in a dry, cool, well-ventilated place away from ignition sources and direct sunlight. Store locked up.
Exposure Limits	Limestone: PEL (Total Dust) 15 mg/m3; PEL (Respirable) 5 mg/m3.
Personal Protection	Chemical safety goggles; protective gloves/clothing; NIOSH-approved SCBA if exposure limits exceeded.

9. TRANSPORT & REGULATORY INFORMATION

DOT (US) / IMDG / IATA	Not dangerous goods.
State Right-to-Know	Limestone (1317-65-3) listed in MA, NJ, and PA.
TSCA Inventory	Limestone and 1-Propene, 2-methyl-, homopolymer are listed.

10. DISPOSAL & ECOLOGICAL INFORMATION

Product Disposal	Does not meet RCRA hazardous waste criteria in purchased form. Do not dispose into storm water or sewage systems.
Packaging Disposal	Dispose of contaminated packaging in accordance with local regulations. Clean packaging should be recycled.
Ecological Notes	No data available on toxicity/mobility. Does not contain Montreal Protocol ozone-depleting substances (>0.1%).

11. DISCLAIMER & PREPARATION INFORMATION

Prepared By	Jessica Wilson
Date Prepared	January 12, 2026
Disclaimer	To the best of our knowledge, information contained herein is accurate. However, there is no assumption of liability for the accuracy or completeness of the information. Final determination of suitability is the sole responsibility of the user.