Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
- Flextra® Sealant is primarily used with low temperature insulation to prevent the migration of water and water vapor into the insulation system via butt joints.
- Flextra® Sealant is also recommended as a bedding compound for the installation of cellular glass insulation. In this application, it protects both the insulation from abrasion and metal surfaces from corrosion.
- Flextra® Sealant is supplied in a special “buttery” consistency, which facilitates application to insulation surfaces without stringing or excessive drag.
- It may be applied at temperatures as low as 50°F (10°C) without difficulty.
- Flextra® Sealant meets requirements for LEED IEQ 4.1 Low-Emitting Materials, Adhesives and Sealants.
- VOC: <420 g/l, less water and exempt solvents.
- Flextra® Sealant contains no asbestos, lead, mercury, or mercury compounds.
Applications & Uses
- Application Method
- Compatible Substrates & Surfaces
- Limitations
- Always test solvent plastic materials for compatibility when using a solvent base product.
- Not suggested for use under solvent base mastics and coatings, if minor surface discoloration and/or dirt pick-up would be objectionable.
- Discoloration can be minimized by allowing 24 to 48 hours cure time before top coating.
- Do not use this product where surface temperature will exceed 200°F (93°C).
- Not suggested for use as a flashing compound.
- Preparation and Application Information
Material Preparation
- Do Not Thin.
- Apply only to clean, dry, oil-free surfaces.
- Keep container closed when not in use.
Application
- Apply by trowel, putty knife or power extrusion.
- When sealing insulation joints, apply FLEXTRA® to the edges of abutting sections at 1/16 in. to 1/8 in. (1.6 to 3.2 mm) wet film thickness and press mating surfaces together firmly to squeeze out air bubbles and to obtain complete contact.
- Strike off excess sealant on surface with trowel.
Power Extrusion
- Flextra® Sealant may be applied using a wide variety of power (pressure) extrusion equipment suitable for use with solvent base sealants.
- It has a soft and buttery consistency with a typical viscosity range of 225,000-325,000 cps (HBT, 5 rpm).
- Note: Pressurized piping made from copper and aluminum alloys may be susceptible to under insulation corrosion when in direct contact with many materials. When used as a joint sealant direct contact between pressurized pipes made from these metals and the sealant should be prevented.
Clean Up
- Use solvent such as chlorinated solvent (non-flammable) or mineral spirits (flammable) for cleaning tools and equipment.
Properties
- Physical Form
- Typical Properties
- Application Properties
- Water Vapor Transmission Rate
The water vapor transmission through 1 in. of impermeable insulation in 12 x 18 in. blocks with 1/8 in. joints of 95-50 is too small to measure. Test method : ASTM E 96
- Combustibility
Combustible. Flame spread and fuel contribution negligible when used as sealant in 1/8 in. wide joints of incombustible insulation.
| Value | Units | Test Method / Conditions | |
| Average Weight / U.S. Gallon | 11.6 | lbs. | ASTM D1475 |
| Average Non-Volatile (by Volume) | 82.0 | % | - |
| Average Non-Volatile (by Weight) | 73.0 | % | ASTM D2369 |
| Average Non-Volatile (by Weight) | 89.0 | % | - |
| Flash Point | 145 | °F | |
| Coverage Range (Trowel) | 12 - 25 | sq. ft./gal. | FSTM 71 |
| Drying Time (Skins Over) | 2 - 3 | Hours | - |
| Value | Units | Test Method / Conditions | |
| Service Temperature Range (Cellular Glass, at coated surface) | -150 to 200 | °F | |
| Service Temperature Range (Pir / Urethane Foam, at coated surface) | -261 to 200 | °F |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Storage & Handling
- Shelf Life
- 6 months
- Storage Condition
Store and apply between 40°F and 100°F