Underwater Kinetics 206 UltraBox
Here's what other sites are saying:
UK Ultraboxes are tough as nails, o-ring sealed against water and airborn particles and built to accomodate an electronic panel in either the lid or bottom of the case if desired. The automatic pressure equalization valve insures easy opening after altitude ortemperature changes. Items placed within are protected by a shock absorbant removable rubber liner.