Re: At least the O-ring wasn't frozen this time...
Another O ring story: I worked for an oilwell service company. The instruments were housed in steel (or titanium) tubes, joined with union nuts. All the instruments had 2 60 mm O-rings to seal the joint, except one joint on one instrument used a 59 mm O-ring.
One day the inevitable happened, the 2 sized were swapped (they are hard to distinguish visually). Everything went fine till about 3 km below the surface. Then the signal disappeared. When retreiving the instruments, they were filled with water and all transistors and relays were completely flattened by the 300 bar pressure.
Biting the hand that feeds IT
