Tekna Seal LLC, a custom manufacturer of hermetically sealed connectors, glass-to-metal
feedthroughs, hermetic seals, lithium battery seals, and ceramic to metal
seals is a Minnesota company which was founded in 1979 primarily to manufacture
insulated hermetic feedthroughs for implantable devices and batteries
associated with implantable devices. Shortly after inception, it was realized
that there were many opportunities for selling glass-to-metal hermetic
feedthroughs in other markets including automotive, aerospace, high performance
sensor packages for severe industrial processes, and critical military
In 1990, Tekna Seal developed a unique glass-to-metal sealing process
that allowed them to improve the performance and reliability of their
hermetic seals substantially over the common sealing practices found throughout
the industry. This process does not require pre-oxidation of the metal
This relatively simple difference has many advantages including:
- Higher levels of hermeticity than industry standard.
- Reliable, repeatable processing.
- A wider variety of materials which can be hermetically sealed including
Titanium, Molybdenum, Platinum, Silver and others.
of oxide formation also means that there is not a requirement for post
hermetic sealing oxide removal. This provides:
of surface etching: tight tolerances can be held as machined.
- No residual cleaning
- Elimination of
hazardous waste streams at Tekna Seal.
- Reduced operations
allowing for lower cost and shorter production lead times.
that they can provide include:
- Glass sealed metal
injection molded (MIM) packages, allowing for cost savings over machined
components in moderate to high volume production.
- Brazed ceramic
feedthroughs using a titanium housing, pure gold braze, and platinum