Chemically etched flat springs work as diaphragm springs used in fuel systems of airplanes- these must be failure free for reasons I’m sure you can imagine. Fotofab has delivered flat and form springs, on-time, for more than 30 years.
Flapper valves used in compressors and vacuum pumps are manufactured from some of the hardest stainless steels available. These steels cannot be cut with conventional cutting tools but dissolving them with our etchant is what we do. Fotofab has manufactured millions of flapper valves over the decades and most of them are likely still in service.
Our flat & formed springs are used anywhere where formed springs are needed.