Packing

{
  "id": "MLC-T-OAG-002677",
  "term": "Packing",
  "field": "Oil and gas",
  "definition": "A deformable sealing material or set of components used to create a pressure-tight barrier around a moving or stationary part, such as a valve stem, pump shaft, or polished rod. It functions by being compressed within a stuffing box or gland, expanding radially to prevent fluid from escaping along the shaft. Packing materials range from braided fibers and graphite rings to V-shaped chevron stacks, selected based on pressure, temperature, and fluid compatibility.",
  "subject": "Production",
  "url": "https://mlchart.com/terminology/oil-and-gas/packing/"
}