Mica Flat Washers - High-Temperature Electrical Insulation Washers
Mica flat washers offer outstanding electrical insulation and thermal resistance, maintaining performance at temperatures up to 600°C or higher. They are used in heating elements, electrical equipment, motors, and high-temperature industrial applications where both heat resistance and electrical isolation are essential.
Superior Washer & Gasket Corp manufactures mica washers in standard and custom sizes with ISO 9001:2015 certified quality management. Our high-performance insulating washer capabilities include mica, Kapton, fiberglass, and phenolic options-all made in the U.S.A. to your precise dimensional requirements.
- High-temperature electrical insulation up to 600°C+
- Natural mica material for consistent thermal performance
- Standard and custom mica washer configurations
- ISO 9001:2015 certified manufacturing
- Made in the U.S.A.

