Nomex Paper Tape | Class H Insulation, High-Temp & High-Strength, Engineered for Extreme Electrical Systems

In electrical systems that must withstand extremely high temperatures and severe mechanical stress, the choice of insulating material is critical. Traditional PET or glass cloth tapes may not be up to these challenges, leading to equipment performance degradation or even failure. Our Nomex Paper Tape, with DuPont™ Nomex® aramid fiber paper as its backing and coated with a high-performance temperature-resistant adhesive, is specifically designed to meet these extreme demands. With its ultra-high temperature rating, excellent mechanical strength, and stable dielectric performance, it is an indispensable material for electrical insulation and bundling in high-voltage motors, generators, transformers, and aerospace equipment.

Core Advantages & Key Features

• Extremely High-Temperature Rating The Nomex® paper backing gives the tape an impressive temperature resistance. It can achieve an insulation rating of Class H (180°C) or higher, with short-term resistance up to 220°C. This allows it to operate stably for a long time in high-temperature environments, significantly extending equipment lifespan.
• Excellent Mechanical Strength and Abrasion Resistance The Nomex® paper backing provides outstanding tear, puncture, and abrasion resistance. In high-speed winding, tight bundling, and high-vibration environments, the tape maintains its physical integrity, effectively protecting internal coils and wires and preventing insulation failure caused by mechanical stress.
• Superior Dielectric Performance Nomex® paper tape has high dielectric strength, providing stable and reliable electrical insulation. It effectively isolates high-voltage currents and prevents short circuits and arcing, making it a core material for ensuring the safe operation of high-voltage electrical equipment.
• Long-Term Reliability The tape has good resistance to various chemical solvents and does not absorb moisture. It is resistant to aging, and its performance remains stable throughout the equipment’s lifecycle, providing you with unparalleled long-term reliability.

Technical Specifications

Typical Applications

• High-Voltage Motors and Generators: For layer-to-layer insulation and bundling of coils, stators, and rotors.
• Power Transformers: For coil winding insulation, end wrapping, and lead fastening.
• Aerospace Equipment: For insulation and protection in electrical systems that require high-temperature and high-reliability performance.
• Welding & Ovens: For fastening and insulation of electrical components in high-temperature environments.

Client Testimonials & Case Studies

“Our motor products often have to operate in extremely high temperatures, so the demands on insulating materials are very strict. Since we started using this Nomex paper tape, we have not experienced a single motor failure due to insulation breakdown. Its high-temperature resistance and mechanical strength provide a solid guarantee for the reliability of our products.” — Process Engineer, a heavy-duty motor manufacturer

Frequently Asked Questions (FAQ)

• Q: What is the difference between Nomex paper tape and polyimide (PI) tape? A: Both are high-temperature insulating tapes. The main advantage of Nomex paper tape is its high mechanical strength and abrasion resistance, making it especially suitable for applications that require tight winding and physical stress. PI tape is known for its higher temperature resistance and thin profile, and is often used in space-sensitive electronic devices.
• Q: Can it be used outdoors? A: Nomex paper itself has good weather resistance, but the tape’s adhesive may degrade over time in long-term humid and UV-exposed environments. It is primarily designed for use inside enclosed or semi-enclosed high-temperature electrical equipment.
• Q: Can it be torn by hand? A: No. Because the Nomex® paper backing has extremely high strength, it requires scissors or a knife to cut, which ensures the cut edges are clean and straight.