We have received many inquiry's about using a different manufacturers flint for lighters manufactured by another company. For example, can I use a Zippo flint for my IM Corona Lighter?
Technically speaking, if you can fit the flint in the allocated space within the lighter, you could use it.
However, it is recommend by all manufacturers to use only the flints manufactured by them (kinda like OEM).
For example, Zippo flints are considerably harder than the stock and replacement flints from IM Corona. This could in fact ruin the spark wheel of your precious gem after normal usage.
Vise versa, a Zippo's spark wheel will eat softer flints like they are going out of style.
Hope this helps!