A Aramid / N Nomex® Polyester tape TSR
A Aramid / N Nomex® Polyester tape TSR
AS-PX50 – A Aramid Polyester tape TSR is a aramid paper laminated polyester adhesive tape with thermosetting rubber adhesive.
AS-PX50 – N Nomex® Polyester tape TSR is a Nomex® polyester adhesive tape with thermosetting rubber adhesive.
An enhanced dielectric strength is achieved via laminating the tape with a polyester film. For electrical insulation at high thermal loads and as final insulation. The result is an F class item (155°C) which joins its excellent electrical and mechanical performances to the Nomex thermal resistance.
- Used in motors as a phase insulator and generally in electrical applications where an elevated thermal resistance is required.
More about PX50 Polyester Tape TSR
What is PX50 Polyester Tape TSR?
Adhesive Specialities manufactures PX50 Polyester Tape TSR (also labelled AS-PX50) using either Aramid or Nomex® substrate laminated with polyester film, with a thermosetting rubber adhesive.
The lamination to polyester film enhances dielectric strength and mechanical durability. The tape meets Class F insulation standards, meaning it can operate safely at around 155 °C. This makes it suitable for high temperature electrical insulation, phase separation, and final insulation in motors or other electrical components.
Uses and Properties of PX50 Polyester Tape TSR
- A Nomex®/Aramid paper + polyester film laminate, coated with thermosetting rubber adhesive.
- Also known as Nomex® Polyester Insulation Tape or PX50 TSR.
- Excellent electrical insulation / dielectric strength, suitable for high voltage separation.
- High thermal tolerance: up to ~155 °C (Class F).
- Durable under mechanical stress: good tear resistance; stable under thermal cycling.
- Used especially as final insulation layer in motors, coils, generators, where elevated thermal loads exist.
- Available in multiple widths; custom sizes supplied on request.
Uses of PX50 Polyester Tape TSR in Various Industries
Electrical & Motor Manufacturing Industry:
Used to insulate phases in motor windings; final insulation wrap around coils; in stators and armatures to prevent electrical breakdown under heat.
Transformers & Generators:
Acts as insulation between layers or components, especially where heat generation is high and mechanical robustness is required.
Heavy-Duty Industrial Electrical Equipment:
Used in components operating under thermal stress—such as alternators, industrial motors, large generators.
