Originally Posted by MartyStrat54

If it creates noise then either it is not compatible with your amp, or it may have become microphonic (why I use the special rubber bands around my tubes).

For a short term experiment, you can take a medium rubber band and wrap it around the tube until snug. Try the tube for a while to see if it works, or if it still has the same problem. If it does, the tube might have gotten damaged in shipping (which would suck).

Marty