I love this paper tape. It isn't real strong because it lacks re-inforcing fibers, but it's terrific for covering existing labels and printed logos on a box. It's perfect for packaging a box being sent by registered mail. It must be moistened to activate the glue: my method is to drag the tape across a water-laden sponge sitting on a dinner plate. This is NOT the type with re-inforcing fibers.

When I uploaded this photo I was almost out of tape and asked for help in finding a source, hence the comments. Amazon.com sells it.