A gland packing having increased compressibility, increased allowable limit of twist, increased tensile strength, and excellent serviceability and versatility characteristics is disclosed which comprises a plurality of flexible graphite sheets cut to a width of less than 5 mm and laid in superposed relation...http://www.google.es/patents/US4705722?utm_source=gb-gplus-sharePatente US4705722 - Gland packing
