These tapes are all acid free, will not yellow over time and can be used with comic books, documents, photos, and other memorabilia. Use CAT #001 for paper repairs and/or to tape down the flaps of a comic book sleeve. Use CAT #002 for sealing comic book flaps permanently. Use CAT #2002 double sided removable tape if you wish to experiment with tape placement and be able to open the comic book sleeve after sealing them.