It should be safe to use, Even original GP-5 filters are safe to use if as long as you don't damage it and wear it for hours at a time, If it is an Israeli filter then it should be a nato nbc filter which is approved and is safe.
(edited by ChefThaSnailor)
A Fandom user·
If it is an Israeli filter, then yes it is safe. However, it may not screw in properly, as Israeli filters have a different screw thread from Soviet masks. Finally, the GP-5 green filters are generally NOT safe to use. Theoretically if it is not leaking, no asbestos will come out and you should be fine. However it's been long enough that many have degraded, and have started to leak. So I would advise using any Soviet-era filters.