I have been told it’s any actual printed copy of Torah. I have seen all of these in Shaimos boxes. Even the Reform and cons. if they have copy of Torah in there. Probably you can remove those pages from the books, that would apply to Orthodox books in Eng. as well.
the worst thing in Shaimos by boxes is mamash secular books like on Israel. I go thru this at my shule to ensure only the right things.
I have now loads of Torah cassettes and CD’s – I imagine they also have to be in Sheimos.