739 BrushSeal™ Water Based Elastomeric
739 BrushSeal™ Water Based Elastomeric is an economical but effective vapor-barrier coating for use over all types of thermal insulation on cold systems. It is specifically formulated for optimal use on systems operating below ambient temperature but not below 32°F, but it can be used on colder systems as long as adequate insulation thickness is present. It effectively retards the passage of water vapor on applications such as chilled water lines, air conditioning ducts, or other pipes or vessels within these temperature parameters. Colder systems than the above are better protected with Vimasco’s 749 VaporBlok™ which has a lower perm rating and is designed for heavy-duty applications. On all cold systems, vapor barrier coatings will only perform well when the proper thickness of insulation is used.
Product families
- Protective Coatings
Other characteristics
- Brand
- 739 BrushSeal
- Features
Cleanable, Cost Effective, Flame Resistant, Heavy Duty, Mercury Free, Vapor Barrier, Water-based
- Product Type
- Coating, Elastomeric Coating, Waterborne Coating
- Coating
- Elastomeric Coating
- Waterborne Coating
- Application Area
- AC Ducts, Pipes
- AC Ducts
- Pipes
- Application Method
- Brush, Spray
- Note
* "Service temperature" refers only to the temperature of air or surfaces coming into direct contact with the coating. This should not be confused with the operating temperature of the system underneath the insulation, which may vary widely depending upon the effectiveness of the insulation used. 739 Brush Seal™ will lose some flexibility at very cold temperatures and will soften at very warm temperatures.
- Color
- White
- Carrier
- Water
- Caution
Do not add water to this product as that will change its physical properties and performance. No expressed or implied warranty will be offered on applications where the product has been thinned or altered in any way.
- Cleanup
- Wet state - water
- Dry state - safety solvent
- Markets
- Building & Construction
- Paints & Coatings
- Storage
Protect from freezing during shipping and storage. After application, it must be protected from freezing and from precipitation or condensation until it is completely cured.
- Coverage
25 sq ft/gal at recommended minimum thickness of 1/16" wet. This yields a dry film thickness of 32 mils (ASTM C 461).
- Regulatory
- Meets requirements for LEED credit 4.2.
- Technology
- Ready-to-Use Products
- Labeling Claims
- Asbestos-free
- Lead-free
- VOC-free
- Application Methods
- Brush
- Spray
- Recommended Shelf Life
12 months in unopened container at 40°F (4°C) to 90°F (32°C)
- Certifications and Compliance
LEED (Leadership in Energy & Environmental Design); Occupational Safety & Health Administration (OSHA)
- Ready to Use Product Features
- Cleanable
- Cost Effective
- Flame Resistant
- Heavy Duty
- Mercury Free
- Vapor Barrier
- Water-based
Technical data
Table 1 of 1
12 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Application Temperature Range | 40 - 120 | °F | — |
| Drying Time (Through) | 12 - 48 | Hours | ASTM D 1640 |
| Drying Time (To Touch) | 2 - 4 | Hours | ASTM D 1640 |
| Elongation (0.76 mm Dry, 21°C) | 90.0 | % | — |
| Service Temperature Range* | -20 to 180 | °F | — |
| Solids (By Volume) | 56.0 | % | — |
| Solids (By Weight) | 67.0 | % | — |
| VOC | 0.0 | g/L | ASTM D 3960 |
| Water Vapor Permeance (32 mils Dry Film) | max. 0.08 | Perms | ASTM F 1249 |
| Water Vapor Permeance (40 mils Dry Film) | 0.04 | Perms | ASTM E96 Proc A |
| Weight per Gallon | 10.7 | Pounds | ASTM D 1475 |
| Wet Flammability | No flash to boiling (212°F) | — | ASTM D 93 |
