A kind of vacuum and low temperature metal sealing device

The invention discloses a kind of vacuum and low temperature metal sealing device, including the first Dewar vessel that can be mutually butted（17）With the second Dewar vessel（28）, first Dewar vessel（17）Installed in heating mounting flange（4）On, second Dewar vessel（28）It is arranged on taper sealing flange（10）On, the heating mounting flange（4）With the taper sealing flange（10）Between be provided with for first Dewar vessel after to docking（17）With second Dewar vessel（28）The low temperature seal metal gasket for being sealed（11）, the low temperature seal metal gasket（11）In the heating mounting flange（4）Heating under and in the taper sealing flange（10）Force under produce plastotype so that the heating mounting flange（4）With the taper sealing flange（10）Between realize tight connecting.