Introducing the Thermal-Grip TubeSeal Fastener (HiLo) from TRUFAST—a reliable sealing solution for blind fastener penetrations in weather-resistant barriers (WRB) and air barriers during the mechanical attachment of continuous insulation. Specifically designed for mineral wool and rigid foam insulation, this fastener delivers secure, airtight performance with less guesswork and more peace of mind.

Key Features & Design

• Sealed performance: Precisely seals blind fastener penetrations in WRBs and air barriers during the mechanical attachment of continuous insulation to keep out drafts and moisture.
• Designed for mineral wool and rigid foam: Specifically engineered for applications involving mineral wool and rigid foam insulation, providing reliable sealing over WRB or air barriers.
• Material specs: The washer component is made from robust polypropylene, offering excellent resistance to environmental stressors. The TubeSeal itself is crafted from resilient polyurethane, providing effective sealing properties that maintain integrity over time. Additionally, the screw is fabricated from carbon steel and finished with a proprietary exterior-grade coating, ensuring superior strength and protection against corrosion and wear.
• HiLo versatility: Available in a comprehensive range of sizes under the HiLo series to fit a variety of installation requirements and project scopes.
• Easy integration: Seamlessly integrates into existing construction practices, simplifying installation while delivering outstanding sealing performance.
• Energy and moisture benefits: By improving sealing at the facer of the WRB or air barrier and sandwiching it between the substrate and continuous insulation, it helps boost energy efficiency and moisture resistance.