1 5/8" ID Hi-Temp Silicone Ring for Vacuum Tubes

Fits new production KT66, KT88, 6550 One of the most extreme environments for vacuum tube operation can be found in the back of any combo-style guitar amplifier.  Whose idea was it to place the tubes right next to a screaming 12 speaker!? Tube rattle is inevitable, and sometimes, it starts on day one after installing a new set of tubes.  One way to help subdue tube rattle is to add a silicone ring, rated for high-temperature applications, around the outside of the tube glass. The thick silicone ring will dampen the rattle.