Cryogenic vial assemblies

A vial assembly comprising:

• a tubular body comprising a cavity, an open end comprising a lip, and a closed end, wherein an internal surface of the tubular body proximate the open end comprises threading wherein the cavity is configured to store a sample, the sample being in contact with the internal surface of the tubular body;
• and
• a cap configured to couple to the open end of the tubular body, wherein the cap comprises:
• a first portion configured to abut the lip of the open end;
• a threaded portion configured to couple to at least a portion of the threading on the internal surface of the tubular body;
• a second portion protruding from the threaded portion and extending into the cavity of the tubular body,
• wherein the tubular body comprises a tube wall and wherein at least a first portion of the tube wall proximate the closed end has a thickness less than a thickness of a second portion of the tube wall proximate the open end;
• the tubular body further comprising at least two flanges proximate the closed end of the tubular body, wherein the at least two flanges are configured to hinge inwardly and apply force to the closed end of the tubular body, each of the at least two flanges further comprising at least one gusset configured to apply an upward force to the closed end of the tubular body.