I’ve never seen a fully sealed LN2 tank. Granted I’ve only worked with the ones for university labs, but all of them have a pressure release valve that’s goes o

I’ve never seen a fully sealed LN2 tank. Granted I’ve only worked with the ones for university labs, but all of them have a pressure release valve that’s goes off periodically, with a secondary back up valve. Is this what you consider sealed? If not, you’ll most likely be creating a bomb. Okay I’ve read a story about a fully sealed tank: https://corante.com/how-not-to-do-it/how-not-to-do-it-liquid-nitrogen-tanks/ https://corante.com/how-not-to-do-it/how-not-to-do-it-liquid...