Teadit 2017 gland packing kevlar graphite 1/2 Gland Packing Graphite The 2017 packing style is an interlock braid of TEADIT's exclusive PTFE / graphite yarn, reinforced with high-strength aramid yarn corners. This proprietary yarn is formed from expanded PTFE in which fine particles of graphite have been encapsulated. The resulting packaging provides good chemical resistance and heat dissipation plus anti-extrusion strength.