Sealing

Sealing

Indium Corporation offers materials for hermetic and cryogenic sealing, as well as for pass-throughs.
These mission critical applications require unwavering assurances and reliability.

Features & Benefits

Indium wire is ideal for these applications for two reasons:
  • It remains malleable at cryogenic temperatures. Most sealing materials that work at standard operating temperatures will crack and break at cryogenic temperatures of +150°C.
  • It is soft and pliable so it fills imperfections in mating metal surfaces, creating a hermetic seal.
Sealing

Sealing Applications

Often sealing applications require that a seal be made inside a channel or other feature that isn't flat and smooth. Indium metal will compensate for these imperfections without the need for reflow.

The cleanliness of the indium is critical for sealing applications. Indium is self-passivating and forms 80-100 angstroms of oxide on its surface. If the oxide is not fully removed, it can be a source of leakage when it becomes compressed within the seal. For more information on this, please read our application notes on Indium for Sealing and Etching Indium to Remove Oxides.

Indium is available in a variety of forms, depending on your application:

Indium Wire

  • Can be used for any manual sealing application
  • Works especially well in channel sealing
  • Diameters starting at 0.010" (0.254mm)

Indium Preforms

  • Provide a precise, repeatable amount of indium
  • Can be packaged in tape & reel for use in automated processes

Indium Foil or Ribbon

  • Ideal for sealing large areas

For more information about indium metal or indium wire, please email cgowans@indium.com or call +1-(315) 853-4900.