about vial/amp caps on deca

hi everyone,
i was wondering if anyone can help me in knowing whether or not the yellow caps on the organon deca's are just protective caps or do they help seal it? i have 2 without caps and was wondering if there is a certain time before i have to use them?

Protects the rubber stopper underneath. If it wasn't there then who knows what someone other than the manufacturer put in it

thanks for your reply basskiller:)