I've never used tube with stickers on the glass. Small signal tubes don't get that hot. Most glues will melt when heated and the sticker will fall off anyway.
Simple tube-use question
Good day A-Gers:
I have a few old pairs of 12AX7 tubes that am planning to evaluate in my phono-pre.
Because they were shipped without a box, some of these tubes have the testing data written on a peel-n-stick label that is attached directly to the glass.
Should the paper/glue be removed before installing (i.e. will the tube get so hot that paper will be a fire hazard)? I would normally scrub-off the paper/glue, but it would be most convenient to keep the data with the tube.
Have you rolled-tubes with paper stickers on the glass?
Thanks in advance for the common-sense that I seem to be lacking today...