NOMEX®

NOMEX®

Sui On Insulating supplies a full range of Nomex® insulation materials — delivering proven thermal and electrical performance for motors, transformers, and generators globally.

Applications

Nomex® insulation material is trusted across industries for its exceptional thermal stability, dielectric strength, and long-term durability.

Industrial Motors

Nomex® insulation paper and Nomex® sheet material are widely used in slot liners, phase separators, and end turn insulation for industrial motors, providing reliable Class H thermal protection and long service life under continuous mechanical stress.

Dry Type Transformers

Nomex® electrical insulation paper is the preferred choice for dry type transformer winding insulation, offering outstanding arc resistance and dimensional stability — keeping transformers operating safely across temperature extremes.

High Voltage Generators

Nomex® sheet and composite laminates provide robust ground insulation and inter-turn protection in high voltage generators, where both dielectric performance and mechanical strength are critical to operational reliability.

Oil Immersed Transformers

Nomex® insulation material maintains its dielectric integrity even when immersed in transformer oil, making it an ideal solution for oil-immersed transformer coil wrapping and barrier insulation applications.

Vehicle Drive Systems

For EV and hybrid drive motors operating at 400V–800V, Nomex® material delivers the thermal and electrical insulation performance required to withstand oil-cooling and water-cooling environments reliably and safely.

Small Low-Voltage Motors

Nomex® paper and Nomex® insulation tape offer a lightweight, flexible solution for slot and end-turn insulation in small low-voltage motors — combining ease of processing with consistent Class F/H performance.

Electronic Products Thin

Nomex® sheet materials provide reliable dielectric barriers and flame-retardant protection in transformers, inductors, and other electronic components where space is limited.

FAQ

1. What is Nomex® insulation?
Nomex® insulation is a high-performance aromatic polyamide material developed by DuPont, available in multiple forms including Nomex® paper, Nomex® sheet, Nomex® insulation tape, and composite laminates. Each form of Nomex® material offers exceptional electrical, thermal, and chemical resistance, making it the preferred choice for motors, transformers, and generators worldwide.
2. What temperature can Nomex® withstand?
Nomex® insulation material carries a 220°C thermal class rating, maintaining stable structural integrity and reliable dielectric performance even under sustained high-temperature operating conditions. This makes Nomex® sheet material and Nomex® paper ideal for demanding industrial applications where thermal endurance is critical.
3. What is the difference between Nomex® 410 and Nomex® 414?
Both are high-temperature Nomex® electrical insulation paper products rated at 220°C, but they serve different purposes. Nomex® 410 is a dense, rigid standard paper suited for structural applications requiring high mechanical strength. Nomex® 414 is a softer, more flexible variant designed for easier wrapping, conforming, and resin impregnation — making it the preferred Nomex® insulation paper for coil winding and transformer applications where conformability matters.
4. Can Nomex® material be used for motor winding?
Yes. Nomex® material is widely used in motor and generator winding insulation — including slot liners, phase separators, end-turn protection, and inter-layer barriers. Both Nomex® sheet and Nomex® insulation tape are standard choices for Class H motor insulation systems.
5. How long does Nomex® last?
Nomex® insulation material is engineered for long-term durability. In protective and industrial applications, Nomex® products are estimated to withstand at least 125 wash-and-use cycles over five or more years without loss of performance — reflecting the same material resilience found in Nomex® paper and Nomex® sheet material used in electrical insulation.
6. What specifications does Sui On Insulating offer for Nomex® materials?
Sui On Insulating supplies Nomex® insulation material in a standard 914mm width with precise custom cutting and processing services available. Our range covers multiple grades of Nomex® paper, Nomex® sheet, Nomex® electrical insulation paper, and Nomex® insulation tape to meet diverse application requirements.
7. Is Sui On Insulating a professional Nomex® material supplier?
Yes. As a DuPont “Golden Partner,” Sui On Insulating offers Nomex® material for sale backed by UL certification (E34739), ensuring compliance with North American safety standards. We provide a complete range of Nomex® insulation products with professional processing capabilities and global distribution experience.

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