Fiberglass tapes in F Class (155 °C) and H Class (180–260 °C) are specialized insulation materials used in electrical, electronic, and industrial applications where high thermal resistance, mechanical strength, and flame retardancy are critical. F Class is common in motors, transformers, and coil windings, while H Class is chosen for extreme heat environments such as aerospace, high‑temperature ducting, and advanced electronics.

🔧 Key Uses of Fiberglass (Glass Cloth) Tapes

F Class (up to 155 °C)

• Electrical Insulation
  • Wrapping transformer coils, motor windings, and slot insulation.
  • Provides dielectric strength and mechanical reinforcement.
• Industrial Applications
  • Used in FFS packing machines, lamination of sheets, and ducting for moderate high‑temperature environments.
• Masking & Sealing
  • High‑temperature masking during powder coating or paint curing.
  • Sealing ducts and chambers up to 155 °C.
• Advantages
  • Good abrasion resistance, flame retardancy, and mechanical strength.
  • Cost‑effective compared to H Class.

H Class (up to 180–260 °C depending on adhesive system)

• Extreme Heat Applications
  • Aerospace and aviation: insulation for wiring harnesses, engine components, and heat shields.
  • High‑temperature ducting and chambers requiring permanent sealing.
• Electrical & Electronics
  • Coil wrapping, transformer insulation, and motor windings exposed to thermal cycling.
• Industrial Uses
  • High‑temperature masking in processes exceeding 180 °C.
  • Lamination and reinforcement in environments with continuous heat exposure.
• Advantages
  • Superior thermal endurance, flame retardancy, and mechanical stability.
  • Withstands harsher conditions than F Class.

📊 Comparison Table

Please email your requirements to [email protected] for: (1) Customized dimensions. (2) Diecut requirements of this tape. (3) Bulk requirements. (4) Customization in quality. (5) Recurring requirements.