NOVELTY - The material has 5 to 20 weight percent of hydrophobic inorganic fiber such as silicic acid fiber, 75 to 90 weight percent of hydrophobic inorganic filler, and 1 to 5 weight percent of organic binder e.g. latex and low particle size talc, and additives such as flocculant and defoamer. Particle size of the talc is in the range of 0.2 to 1.5 microns. The material is formed using a non-woven sheet forming element (100) by preparing gasket sheet slurry with talc slurry, forming a pre-densified gasket sheet from the gasket slurry, and densifying the pre-densified sheet.    USE - Extreme temperature gasket material for use in a solid oxide fuel cell, in connections of a thermal storage system and in flanged connections, manhole covers, and valves of a concentrating solar power system e.g. linear concentrator system such as parabolic trough system, and linear Fresnel reflector system, and power tower system. Can also be used for titanium dioxide manufacturing, fertilizer and ammonia manufacturing, incineration and co-generation.    ADVANTAGE - The material can withstand extreme temperatures of above 850 degree Fahrenheit. The inorganic filler material is present in the gasket material in the range of 75 to 90 weight percent, thus improving sealing properties of the gasket material. The talc repels water, and functions as a better sealant. The low particle size fillers enable producing gasket materials having few voids. The material allows the solid oxide fuel cells to operate at high temperatures around 1,000 degrees Celsius, thus eliminating the need for precious-metal catalyst, and hence reducing manufacturing cost of the cell. The material allows solid oxide fuel cells to reform fuels internally, thus enabling the use of a variety of fuels and reducing the cost associated with the addition of a reformer to the system.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for manufacturing an extreme temperature gasket material.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a non-woven sheet former used for making extreme temperature gasket materials.    Non-woven sheet forming element (100)    Upper portion of non-woven sheet forming element (110)    Access port (115)    Lower portion of non-woven sheet forming element (120)    Filter media (130)    Screen (131)    Filter paper (132)