Compressors fail for many reasons. The reason for most failures is excessive wear, and internal parts failures. After that is lubrication failures from not enough lube oil. The specific failure cause is arbitrary, even when the base cause is lubrication, something unique is going to be the case comparing compressor failures.

Regarding O ring sizes, I know they are manufactured to the exact size listed, however I don't know how O rings can be measured accurately especially when the size difference is 0.1 mm. I can't measure the sizes well enough to id similar O rings. I don't know of any way to do this without specialized tools.