Gost 25045 -

It defines the types of mica (such as muscovite or phlogopite) and the binding agents (shellac, epoxy, or silicone) that can be used.

Materials are typically categorized by their heat resistance and physical form (e.g., rigid sheets for commutator segments vs. flexible tapes for coil wrapping). Technical Requirements: gost 25045

Minimum voltage thresholds the material must withstand before failing. It defines the types of mica (such as