Metal-to-metal seal

{
  "id": "MLC-T-OAG-002328",
  "term": "Metal-to-metal seal",
  "field": "Oil and gas",
  "definition": "A sealing mechanism that relies on the direct contact and elastic or plastic deformation of two precisely machined metal surfaces, without the use of elastomeric or non-metallic gaskets. This design provides a high-integrity barrier against fluid leakage, especially in high-pressure, high-temperature (HPHT) environments where elastomers would fail. Metal seals are a standard feature in premium threaded connections for casing and tubing, as well as in wellhead equipment and downhole completion tools.",
  "subject": "Production",
  "url": "https://mlchart.com/terminology/oil-and-gas/metal-to-metal-seal/"
}