FIREFLY MILLBOARD FF800 GLASS ROLL COVERING was developed over 25 years ago specifically to replace asbestos roll cladding materials in the flat glass industries.

Millboard can be used in sheet form in a wide range of applications in the glass industry, including heat shields, flue gas gaskets, and insulation pads for conveying newly formed glass components. However, it is in the form of rings for the assembly of sheet glass conveying rolls that FF800 demonstrates its unique high temperature strength, non marking and long life properties.

The FF800 rings of typically 8 mm thickness are compressed onto a mandrel and machined.
FIREFLY MILLBOARD FF800 covered rolls are used in the float, flat and vertical drawn glass processes

TENMAT FIREFLY Millboards are world´s finest range of top quality non asbestos and non ceramic fibre millboard sheets for high temperature applications in all heat using industries.

Wet laid, clay bonded inorganic mineral fibre boards available in typically 1m x 1m square sheet format in thicknesses from 1.5mm to 12mm. All ranges possess high temperature capability, in excess of 1,000 °C, and low thermal conductivity (K value), less than 0.1 W / mK, making them a first choice for thermal insulation applications.
At a density of typically 1,000 kg/m3 they are rigid, strong, and can be used in sheet form or cut to produce gaskets and seals.
They are all exonerated products in accordance with the European Directive 97/69 EC on Classification, Packaging, and Labeling of Dangerous Substances.
Various grades with unique properties are available for specific applications:

• Roll coverings for lehr rolls in the float and flat glass processing (FF800)
• Heathshields in molten metal casting (FF700)
• Mould seals in spin casting of metal tubes and valves (FF900)
• General gasketing in domestic appliances (FF700)
• Sacrificial linings in primary aluminium melting pots (FF700)