Corrosion continues unhampered under the rubber and tight fitting clamp. The inside of the O-ring groove experiences the same corrosion as the shaft or sleeve. The process fluid selectively removes elements from the piping or any other part that might be exposed to the liquid flow. The liquid tries to replace the missing elements as it flows through the system. The un-dissolved metals often coat them selves on the mechanical seal faces or the sliding components and cause a premature seal failure.
Heat accelerates the process.
These organisms are commonly used in sewage treatment, oil spills and other cleaning processes. Anaerobic, the kind that do not need oxygen. Facultative, the type that goes both ways. Once in, the attack can continue on in a manner similar to that which happens when rust starts to spread under the paint on an automobile. The Mc Nally Institute 1986 S. Belcher Rd.