JST’s metal end cap seal is a customized elastomer-to-metal seal that combines the advantages of metal-on-metal components with the flexibility of elastomeric seals for maximum extrusion resistance in high-pressure wellhead sealing environments.

These high performance elastomer-to-metal bonded sealing elements provide the high level of extrusion resistance necessary for high pressure casing and tubing applications.

JST can provide customized sealing solutions to meet specific oilfield requirements, including Rapid Gas Decompression (RGD) and acid gas resistant elastomers with corrosion-resistant metal end caps.

Sealing is achieved by controlled deformation of elastic elements, which compensates for poor internal surface finish of pipes and casings. Optimal stress distribution throughout the elastomer is modeled via Finite Element Analysis (FEA) to ensure high performance sealing and long life cycle.  Extrusion resistance is provided by the specially designed end caps that provide positive interference with the bore upon assembly and that deform into any potential extrusion gap under pressure.

Applications

• High pressure wellhead sealing environments, such as casing strings and tubing hangers.