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If you need to reduce heat transmission, or keep cold things cold, ceramic fiber gasket sheet material might be what you’re looking for. Sold in thicknesses from 1/32” up to ¼” (which is basically board,) this is a flexible paper-like ceramic that both insulates and resists attack by almost all chemicals, (except concentrated alkalies and a few acids.) Peak temperature varies by grade but goes as high as 2,300 °F.

Ceramic fiber gasket sheet is produced by paper-making processes, and like paper, is composed of randomly oriented fibers held in a matrix by a binder. Expressed more technically, it’s alumino-silicate fibers with a latex binder.

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Thickness:  1/32” to ¼”
Max Temp:  2300°F
Width:  48”

As a non-woven sheet, this is a very flexible material that wraps around pipes or other curved surfaces. Or alternatively, where there’s little room for most insulating materials, it provides a thin yet very effective barrier to heat transmission. Applications include appliances and processing operations that use furnaces. Steel, non-ferrous metals and ceramics manufacturing can all benefit from using ceramic fiber paper as a backup to primary refractory materials. It’s also used for fire protection.

Excellent chemical resistance makes ceramic fiber material a candidate for gaskets in a range of challenging environments. Petrochemical operations are an industry sector where it excels. Its only weaknesses are susceptibility to hydrochloride and phosphoric acid, along with strong alkalies.

Hennig Gasket & Seal offers ceramic fiber gasket sheet from leading manufacturers in widths up to 48”.