Firefly Millboards

Firefly non-asbestos / non-ceramic fiber Millboards are used in a wide variety of industrial applications for high temperature thermal insulation and gaskets. Firefly Millboards exhibit exceptional wear resistance. This, coupled with performance at temperature and ease of cutting, makes Firefly the ideal solution to all high temperature gasketing problems. In addition, Firefly Millboard has set the standard for roller cladding material, designed to meet the most stringent requirements of glass and steel producers worldwide.


Tensile Strength ( MPa )5
Tensile Strength ( psi )725.2
Continuous Operating Temperature ( ºC )1000
Continuous Operating Temperature ( ºF )1832
Moisture Content ( % )1
Standard Sheet Size ( in )40 x 40
Standard Sheet Size ( mm )1016 x 1016


The Firefly properties listed represent typical average values obtained in accordance with accepted test methods and are subject to normal manufacturing variations. They are supplied as a technical service and are subject to change without notice. Check with your supplier to assure current information


Foundry Service and Supplies is a full-service fabricator with an unmatched reputation for quick turn-around and competitive pricing. We can easily handle any job for fabricated parts or stock sheets, from high production quantities to prototypes. We specialize in die cutting the Firefly line of Millboard materials. Our quality and reliability make Foundry Service the best choice for all of your high temperature material requirements.

Product Variations

Back to top