Originally Posted by
MarineEngineer
The cable tie is strong enough to stop the door rising enough for the stop pins and pads to disengage. Perhaps the door could rise a few milimetres?
The stop pin faces are convex and the stop pad faces are concave giving a spherical seating.
Correction - OH NO THEY AREN’T. Thanks subsequent contributors. A cable tie would be essentially in tension to keep the pins & pads engagaed. If that is a cable tie in the photo then you can see the horrible attraction of using one (or two) to hold the door / plug in place before fitting the locking bolts.