Looking at the sticker/tape covering the 'Kaiser' markings on the blaster, it looked like a familiar type of tape to me.
Reminds me of 1/4" and 1/2" marking tape like the kind once ubiquitous in a film editing bay. Used to mark film rolls and to keep them from unspooling off the core.
No idea if I'm right but look how well the 1/4" covers the 'Kaiser':
So that's what I'm using on mine.