It need to be a 3,9Uf High Frequency Bi-Polar capacitor of at least 100 volts.
As far as I know the only alternate on the market is the Panasonic ECW-F2395JA film capacitor.
I used it in my all recaps and works perfect, fitting is just a bit of an issue.
No glue need: I actually remove all the old silicone from the original PCB.