I am looking for a source for this size and style of internal snap ring.  Have contacted Arcon Ring & Specialty Corp and several others with no luck.  All of the styles I have found are round, and do not have the sides bulging in (which is a requirement for this project).  Anyone having ideas please contact via the post on the newsgroup entitled "Looking for internal snap ring source" or email rbce2003@hotmail.com

Sorry for the sloppy notes on the dropbox photo, but that is the only pic I have of it.

Thanks - R.B.