Well, I really didn't know if some company/business didn't still supply them, but it's now obvious I'll have to shake the bushes. The reason I wanted steel septums is that I plan on using rubberized flexible magnet sheets(like those used to stick advertising signs on car doors) glued to my old plate holders to bring the film plane inline with where the glass plate would be. Then I could have the septums loaded and just stick them on the glued magnet. Now that I know they are steel I will definitely be shaking the bushes. Oh, and I'm sure they will fit since I've already pulled the sheath's out of some Riteway/Fidelity film holders and am now using those glued to cardboard. Any leads to some septums for the Grafmatics would be greatly appreciated. JW