The AP16CH2 environmental, pressurized housing shall be constructed from .16" (4mm) thick aluminum. The camera housing shall be sealed on both ends by radial pressure O-rings to create a tight seal. Front to back motion shall be prevented by a retaining ring in the front and screws in the back. Chemically strengthened glass shall be used for the faceplate. The housings shall contain a single corrosion resistant connector for power, video, and external sync, and a mating connector shall be provided for the camera.