A crosslinkable, pre-adhesive composition is described comprising an acid-functional acrylate copolymer and an aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles. The raw materials used are fly ash, sodium hydroxide, and rice husk with and without sodium silicate. The gasket comprises silicone, other elastomer, or other heat resistant and insulating material. The radicals of the reducing agent are produced by applying a voltage differential with electrodes to a gas such as hydrogen.