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E&H 743-MT Metalized PVF Tape | Boeing BMS 5-157 Rev. K GAT100FR1
E&H 743-MT Metalized PVF Tape | Boeing BMS 5-157 Rev. K GAT100FR1
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E&H 743-MT is a dull gray metalized polyvinyl fluoride (PVF) pressure-sensitive insulation cover splicing tape — a direct alternative to Orcon OT-157TN, engineered for the fabrication of aircraft insulation blanket covers and the installation of insulation blankets. Built on metalized PVF film with a 10×10 visual scrim and a highly fire-retardant acrylic adhesive, it seals sewn seams and closes fabrication slits and holes around brackets, conduits, and other objects after installation. Manufactured by E&H Laminating & Slitting Company — the recognized specialist in aircraft insulation blanket tapes. Meets Boeing BMS 5-157 Rev. K Type I Class 1 Grade A Form 1 Comp. MPVF, plus Gulfstream GAT100FR1, FAR 25.856(A), FAR 25.853 (A or B), and BSS-7230.
Key Features of E&H 743-MT PVF Tape
- Orcon OT-157TN alternative — Drop-in replacement for OT-157TN in existing insulation blanket programs. See the full side-by-side comparison →
- Dull gray metalized PVF film — Proven aerospace film with excellent weathering and chemical resistance; 10×10 visual scrim for dimensional stability
- 0-second flame time, no drips — Highly fire-retardant acrylic adhesive; 1.9" maximum burn length in 12-second vertical burn testing
- Stable peel across the envelope — 3.0 to 3.8 lb/in from −65°F through 160°F, including 120°F at 100% RH
- 18-month shelf life — Minimum 18 months in cool, dry storage for depot and MRO stockpiles
What Is E&H 743-MT Used For?
- Fabrication of aircraft insulation blanket covers
- Installation and securing of thermal and acoustic insulation blankets
- Sealing sewn seams on insulation blanket covers
- Closing fabrication slits and holes around brackets, conduits, and other objects after installation
- Direct replacement for Orcon OT-157TN in existing insulation blanket programs
Specifications
Approvals
Sizes
Spec Guide
FAQ
What is E&H 743-MT tape used for?
E&H 743-MT is a metalized PVF insulation cover splicing tape used to fabricate aircraft insulation blanket covers, install thermal and acoustic insulation blankets, seal sewn seams, and close fabrication slits and holes around brackets and conduits after installation.
Is E&H 743-MT a replacement for Orcon OT-157TN?
Yes. E&H 743-MT is a direct alternative to Orcon OT-157TN, meeting Boeing BMS 5-157 Rev. K Type I Class 1 Grade A Form 1 Comp. MPVF for insulation blanket cover splicing.
What is the difference between E&H 743-MT and 743-T?
The 743-MT uses a dull gray metalized PVF film (Boeing composition MPVF, Gulfstream GAT100FR1) and is the Orcon OT-157TN alternative. The 743-T uses a white non-metalized PVF film (composition PVF, Gulfstream GAT100FR2). Boeing's callout specifies which composition is required; they are not interchangeable.