https://www.hermeticseal.com/
Hermetic seals for handling harsh and extreme conditions
Hermetic single seals are manufactured by Hermetic Seal Corp, and are capable of handling harsh and extreme conditions. HSC is an integral part of AMETEK.
hermetic sealshandlingharshextremeconditions
https://pubchem.ncbi.nlm.nih.gov/patent/US-11161737-B2
Method for forming hermetic seals in MEMS devices - Patent US-11161737-B2 - PubChem
US-11161737-B2 chemical patent summary.