
High-Performance AMA Laminate Insulation | Class F 155°C Aramid Mylar Aramid Composite Sheet for Motor Slot Liner - STK
STK's High-Performance AMA Laminate Insulation is an advanced, flexible three-layer composite electrical shielding sheet. Built with a smart "sandwich" architecture, it tightly bonds a high-dielectric polyester film (Mylar) core between two outer layers of ultra-tough aramid paper (Nomex type).
This multi-layer engineering gives you the best of both worlds. The central plastic film acts as an impenetrable high-voltage floodgate, while the outer premium aramid fibers protect the core from thermal degradation and offer an ideal textured surface that drinks up industrial impregnating varnishes.
Product Features
Elite Class F Thermal Defense (155°C): It handles continuous working temperatures up to 155°C seamlessly. It will not become brittle, crack, or lose its structural form during heavy electrical overloads or long-term operational heat cycles.
Massive Puncture & Tear Resistance: The internal Mylar core gives the material incredible physical stretch and tensile toughness. Workers can jam, hammer, and slide this laminate into tight metal slot channels without sharp edges cutting through the shield.
Flawless Varnish Adherence & Absorption: The fibrous outer aramid paper acts like a capillary matrix. When the finished motor or transformer is dipped in insulating varnish, it absorbs the resin completely, curing into a rock-solid, moisture-proof component.
Perfect for Automated Winding Lines: It features highly calibrated stiffness and zero edge burrs. It feeds smoothly into automated coil-winding and slot-inserting machinery without jamming, tearing, or causing line downtime.

Applications
Electric Motor Slot Insulation:
Lining the internal steel slot channels of industrial electric motors, generators, and household appliance pumps to isolate coils from the metal frame.
01
Phase-to-Phase Insulation:
Serving as the flexible, high-voltage separation barriers between different phase wire segments inside heavy alternating current (AC) motors.
02
Transformer Interlayer Shielding:
Providing a tough, heat-resistant dielectric sheet layer between wire windings inside dry-type distribution transformers and control coils.
03
Heavy Busbar & Coil Wrapping:
Wrapping around thick copper power conduits and high-current magnetic coils that demand durable mechanical cushioning.
04
STK Precision Custom Services
Precision Log Roll Slitting: Do you need wide sheets for custom hand-wrapping or narrow ribbon rolls (such as 20mm or 35mm) for high-speed automatic slot inserters? Our automated slitting lines ensure razor-sharp borders with zero loose fibers.
Custom CAD Shape Die-Cutting: We can stamp, crease, pre-fold, and kiss-cut AMA insulation sheets into ready-to-use custom slot liner sleeves, insulating end caps, or spacer gaskets matching your engineering drawings perfectly.
True Factory B2B Contract Pricing: Bypass expensive international trading markups. We provide high-volume manufacturing plants, global OEM suppliers, and material distributors with direct factory volume-tiered quotes.
Hot Tags: high‑performance ama laminate insulation sheet, equivalent to nmn (f‑class, 155 °c), China high‑performance ama laminate insulation sheet, equivalent to nmn (f‑class, 155 °c) manufacturers, suppliers, factory










