Unsure if this is a capacitor

[Unimatic1140]

Hey guys, years ago I recapped and restored a 1948 bakelite floor model Admiral 10" set with chassis 20X1. Recently it developed a symptom of the picture height was shortened and it appears that the moving image had multiple images of the same image on the screen.

In taking voltage checks it seems when I measured around this part that looks like a resistor but appears to actually be a capacitor the screen fixed itself and was suddenly fine again. The schematic say 180mmf and I'm wondering if this actually is a .0018mf capacitor? I'd like to try replacing it but want to be sure I know what this part is before I do that. Please see image.

I have a few .0015mf/1600 volt caps, could this be a suitable replacement or should I try and find a .0018? Also why is this capacitor so large, would it be higher voltage cap? For some reason the Sams Photofact doesn't mention the voltage of this cap in the listing like it does with most of the other capacitors listed.

Thanks everyone!