The Thermal-Grip TubeSeal Fastener from TRUFAST® is a high‑performance 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, it keeps the WRB/air‑barrier airtight and moisture‑free—because nobody enjoys drafts in their walls.

Key Features & Design

• Available in all sizes to match project requirements and fastener spacing
• Seals blind fastener penetrations in weather-resistant barriers (WRB) and air‑barriers during the attachment of continuous insulation
• Specifically designed for mineral wool and rigid foam insulation
• Three‑component construction for reliable performance: washer made from polypropylene; TubeSeal crafted from polyurethane; screw component fabricated from carbon steel with a proprietary exterior‑grade finish
• Provides a secure, airtight connection between the substrate and the continuous insulation layer
• Durable materials deliver long‑term building envelope integrity and enhanced energy efficiency
• Straightforward installation for both new construction and retrofit projects
• Helps prevent air and moisture infiltration, supporting industry‑standard air/moisture barrier performance

In short, the Thermal‑Grip TubeSeal Fastener delivers a dependable, airtight seal for continuous insulation attachments—keeping your WRB and air‑barrier intact without drama.