Best tube dampers that you have used

Uh, Wolfie, it’s all connected- the filament, the internal structure, the glass. Capish? Besides even tubes advertised as low microphonic are in fact microphonic. I guess you’re not much of a tube guy.

My favourite tube dampers are the Duende Teflon/titanium tube dampers.  They are an improvement from what came from Audio Research on my LS16 MK II although less than what I got from substituting NOS tubes (let alone updating the output caps to the latest Stealth caps).  Same result when reubing my VT100 MKII amp, although the input and driver tubes were JAN Phillips 6922 tubes supplied by Audio Research.  Much better bass.  Subsequent substitution of the Wondecap interstate coupling caps by Stealth caps made the biggest difference.

I have the same ring on my audioresearch. After two 6H30 tube replacement . Rings are good for how many years ?  Is it better to stay with the audioresearch ring ?  I saw some with metal and soft rubber ring...

Uh, Kaitty, you can't "overdamp" the glass of a tube...Capish? I guess you're not much of a reality or comprehension guy.

Wolfie, I know you aren’t but what am I? One assumes whatever school you went to, if you did go to one, was some sort of fluffy two year trade school.