Was it made specially for you and fitted to shape of your face? If not, it is not air tight. Majority of masks sold at Walmart (where I buy masks for wearing when doing dusty work) are not N95 type. I pay like 25-29 cents for each.
The have (had) N95 masks and respirators in the paint section. You aren’t serious about “specially made for you”, I hope. If the real question is “Does it seal well?”, yes it does.
“Was it made specially for you and fitted to shape of your face?”
None of the gas masks the Navy issued me were specially fitted to me.