While many modern standards have shifted toward synthetic polymers, mica-based materials remain indispensable for "heavy-duty" electrical applications where reliability under extreme heat is non-negotiable. Manufacturers in the CIS region still reference GOST 25045 to ensure compatibility with legacy industrial infrastructure and to maintain a baseline of proven material durability. Sciences Of Europe No 133 (2024) - Calaméo

The standard outlines several parameters to ensure safety and performance in electrical machinery:

Used as slot insulation and between commutator segments.

Materials produced under GOST 25045 are essential in the following areas:

The maximum operating temperature (ranging from Class B at to Class H at

Minimum voltage thresholds the material must withstand before failing.

Resistance to bending, compression, and shearing. Industrial Applications

According to archival technical documentation found on Calaméo , this standard governs the production and quality control of insulating sheets and tapes made by bonding thin flakes of natural mica together using various resins or varnishes. Key Components of the Standard