Eagle Gasket Co. Manufactures PTFE and Teflon Industrial Gasket. Eagle Gasket Co. Is an ISO 9001: 2000 awarded company that also manufactures different types of gaskets. PTFE and Teflon Industrial Gaskets are made of Teflon material. Teflon is principally used as a gasket material because of it`s capability to remain unaffected by the majority of chemicals used in industry. Filled Teflon is a gasket material with a virgin Teflon base to which a substance is added during manufacture to improve the sealing characteristics of Teflon. Expanded Teflon possesses no structural weakness [grain] and expands and contracts equally in all directions.