Enhanced TDS
Identification & Functionality
- RTU 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
Value Units Test Method / Conditions Coverage (1/8 in. to 1/16 in. wet film thickness, trowel) 12 - 25 ft²/gal FSTM 71 Storage Temperature 4 - 38 °C - Average Non-Volatile Content 73 Wt(%) ASTM D2369 Average Non-Volatile Content 82 Vol(%) - Average Non-Volatile Content 89 Wt(%) - Drying Time (skins over, essentially non-drying) 2 - 3 hours - Density 11.6 lbs/gal ASTM D1475 Flash Point (wet flammability) 63 °C ASTM D93 Volatile Organic Compound Content max. 420 g/L - - Application Properties
Value Units Test Method / Conditions Viscosity (at 5 rpm) 225,000 - 325,000 cPs HBT Service Temperature Range (cellular glass, at coated surface) -163 to 93 °C - Service Temperature Range (PIR / urethane foam, at coated surface) -100 to 93 °C - - 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.
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Packaging & Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 6 months
- Storage Condition
Store and apply between 40°F and 100°F