> I am so glad to hear that we don't have to put a hole in the bag anymore. I can think of one really good reason to not seal a bag: multiple materials that hate each other like patent models made of oak, rubber and metal. Seal that bag and you are setting up a situation where the off-gassing of the rubber and wood eat at the metal. Sure it's going to happen, but why speed up the process? Also I have found "archival polyethylene" bags purchased in the 80s that are sticky and/or yellowing. Do you trust your plastic know-how? About the tags...just a brainstorm for someone to debunk. B-72 is also used as a glue. Could you stick the dot or tag onto an object using this reversible acryloid? Theoretically you are sealing the object surface away from what you are attaching...but would that be enough to keep one metal from contributing to the other's rust? If the object is a textile, could you perforate the side of the metal tag to sew to cloth tape and then attach it to the textile? Sally Baulch Collections Manager, Anthropology and History Division Texas Memorial Museum Austin