Material:

Style Aidmer76-031C made from layers of flexible graphite tape plied into compact strands; each individual filament is reinforced with an Inconel wire or Stainless steel jacket. This yarn is then square braided to form a dense  yet malleable packing, which is subsequently  treated with lubricating agents to reduce stem friction and a corrosion inhibitor to prevent pitting. Super-high Temperature & Pressure Valve Packing