thermos cap detail

thingiverse

The thermos cap is a vital component of the entire system, designed to perfectly seal the container and maintain an insulating vacuum around the interior. This precise fit ensures that heat transfer between the contents and the external environment is minimized, allowing liquids to remain at a consistent temperature for extended periods. The cap's threads are carefully machined to securely engage with the corresponding threads on the thermos body, creating a tight seal that withstands both internal pressure and external forces.