TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: (d1) comprises magnesium oxide (1 - 30 or 20 - 100 pbw). (b1) is calcium carbonate, carbon black, graphite, fumed silica, and/or kaolin (preferably carbon black (35 - 100 pbw).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent is ketone, alcohol and/or ester (preferably methyl isobutyl ketone, ethyl acetate, cellosolve acetate, sorbitol acetate, 3,5,5-trimethyl-3-cyclohex-enene-1-one, cyclohexene-1-one, butyl cellulose acetate, ethanol, methanol and/or isopropanol, especially blend of 3,5,5-trimethyl-3-cyclohexenene-1-one (20 wt.%), cyclohexene-1-one (20 wt.%), and butyl cellulose acetate (60 wt.%)). (c1) is an amine (preferably n,n'-dicinnamylidene-1,6-hexene, hexamethylene diamine carbamate and/or ethylene diamine carbamate, especially n,n'-dicinnamylidene-1,6-hexene (8 - 100 pbw).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: (d1) comprises magnesium oxide (1 - 30 or 20 - 100 pbw). (b1) is calcium carbonate, carbon black, graphite, fumed silica, and/or kaolin (preferably carbon black (35 - 100 pbw).    TECHNOLOGY FOCUS - POLYMERS - Preferred Gasket:(G1) further comprises (pbw) polytetrafluorinated ethylene particulate (e1) (less than 75 or 5 - 100) having a mean particle size of 10 - 50 mu; microspheres (0.5 - 20 or 8 - 100); wax particulate (0.05 - 5); solvent to provide an admixture viscosity of 10000 - 500000 centipoises. EXAMPLE - A bipolar plate in a fuel cell was prepared as follows: The following ingredients (parts by weight (pbw)) were mixed Viton B (RTM; FKM terpolymer) (100), MT990 (RTM; carbon black) (30), Maglite Y (RTM; magnesium oxide) (10), wax (1.2) and polytetrafluorinated ethylene (PTFE) (50). The agglomerate was then blended into the sheet and then cut into about 1 g chunks. A coating was prepared by dissolving and mixing the pieces into butyl cellulose acetate solvent (weight ratio 3:5 (solids vs. solvent)). N,N'-dicinnamylidene-1,6-hexene curing agent (weight ratio 1:23) was mixed over the above polymer solution just before applying the coating. A viscosity was measured on the final coating at around 100000 centipoises by Brookfield viscometer. Screen-printing was used to apply the coating selectively onto a graphite substrate to make a gasket for a fuel cell. The screen-printed part was then dried and cured, at 90degreesC and 390degreesC. respectively, each for 15 minutes. The coating was used for sealing and for electrical insulation. Testing showed that the FKM coating sealed air under 10 lb/in2 load and provided sufficient insulation function with 150 microns thick cured film.