"Things got through a watertight seal easy enough and grew up real fast."
One particular manufacturer offers a plastic bag type solution with a watertight seal, and a glass port front.
The mine has a steel case made from two dished plates joined by a watertight seal.
When not in use, the turret rested on a brass ring that was intended to form a watertight seal.
It popped when he pulled it off, breaking the watertight seal.
They allow separate neck seals, gloves, and boots to be joined to the suit with a watertight seal.
Some books suggest that you press down hard with your full weight to seat the bowl and shape the gasket to make a watertight seal.
The seams were melted together to form a watertight seal.
The main problem was coming up with a flexible watertight seal that would attach to any surface and allow us to make the cut.