3L Liquid Nitrogen Tank Cryogenic Container W/ Bag Dewar Tank /Semen
Nov 06, 2019
Dewar leaked and could not hold a full vacuum.
This dewar did not have a full vacuum, and the first time I put in 2-3 liters of liquid nitrogen, it completely boiled off in less than six hours. The unit has a plug with two O-rings, which is "sealed" with an ointment-like substance that is obviously not able to stop a leak. If it were sealed with 100% silicone caulk, it may have held a full vacuum.