Xicon 3.3uF 50v Low ESR Bipolar Electrolytic Capacitor, Radial Leads BPHR50V3.3-RC

Difficult to find Low ESR (high frequency) bipolar horizontal width cap.

If you're working on an a CRT and find a bipolar electrolytic capacitor that's unusally large, these are the correct style replacements.  A non low-ESR type will be short lived!