I’m not supposed to say anything about this, but the Challenger Space Shuttle disaster was caused by ORing failure from a company in Orange County (rubber factory) I worked part time after retiring. Be careful with hiring subcontractor companies. They made parts for the F22 and the F35 also.Cause was undetermined, but an electrical sparkcaused the hoses to rupture at the water heater. (I went to the manufacturer for the information)
They denied it, I am who I am!
The failure was caused by the cold weather and not the ORings in normal conditions.