RCA T-120 for $50 BIN

[benman94]

I picked up the T120 today. As soon as I go it home I pulled out the chassis. I have two questions now:

#1 At the end of the 12LP4's neck (right before the socket connects to the pins) there is a black plastic ring. This ring is loose. Brown crusty stuff is falling out from under this ring. What the heck is this, and more importantly, how do I fix it (if I even can)? Does the brown crusty stuff mean the tube is ruined?

#2 The cabinet itself has a transparent piece of plastic that covers the picture tube. It has a moderate gouge in it. What would be the best way to try to buff it out without hurting the case.

Thanks,
Benny