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3M™ Glass Cloth Tape 398FR – Acrylic adhesive glass cloth tape – sealing aircraft panels, aerospace, automotive, insulation

  • Item Name: 3M™ Glass Cloth Tape 398FR

  • Manufacturer: 3M

  • Technologies: Acrylic pressure-sensitive adhesive on woven glass cloth backing, flame-retardant, skip-slit liner

  • Color: White

  • Cure Type: Pressure sensitive (self-adhesive, no curing required)

  • Package Size: Roll, 24 rolls/case

  • Shelf Life: 24 months

1. Product Overview

3M™ Glass Cloth Tape 398FR is a white, flame-retardant tape designed for aerospace and high-performance industrial applications. It features a durable glass cloth backing that provides excellent abrasion and puncture resistance, paired with a pressure-sensitive acrylic adhesive for long-term adhesion. The tape offers high conformability, clean appearance, and flame resistance, meeting F.A.R. 25.853(a), F.A.R. 25.855(d), and Boeing BMS 5-146 Type I, Class I, Grade A specifications. It performs reliably across a temperature range of -29°C to 121°C and is EU compliant regarding flame retardant regulations.


2. Applications

  • Sealing thermal and acoustic insulation panels in aerospace

  • Applications requiring high adhesion and flame retardancy

  • Splicing flame-retardant materials

  • General industrial, automotive, military, and specialty vehicle sealing needs

3. Typical Properties

Property Value
Adhesive Type Acrylic
Backing Material Glass cloth
Backing Thickness 0.13 mm
Adhesive Thickness 0.05 mm
Color White
Tensile Strength 227.7 N/100 mm
Elongation at Break 7%
Core Size 7.62 cm
Maximum Operating Temp 121°C
Minimum Operating Temp -29°C
Indoor/Outdoor Use Yes
Shelf Life 24 months
Total Tape Thickness 0.18 mm
Units per Case 24 rolls
Overall Length 32.9 m
Overall Width 50.8 mm
Specifications Met ASTM D3330, D3652, D3758, F.A.R. 25.853(a)
Industries General Industrial, Aerospace, Automotive, Construction, Transportation, Specialty Vehicle, Military

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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