Sealing primers (and projectiles), do you and if so with what product?

Years ago, before I started reloading, a dear friend and colleague would often load powder puff loads for me. He would seal the primers and perhaps the projectiles as well.

His loads always worked wonderfully even after several years in storage.

I reside in a coastal area.

Wondering what product is preferred for this.

Any drawbacks?

Thank you

I spent a few years stationed in St. Mary's, GA. Doesn't get much more humid. Instead of sealing Individual rounds, you may be better served by storing your ammo in good condition ammo cans.

Sealing ammo is labor intensive, time consuming and unnecessary. I've always stored my ammo in military ammo cans and have shot reloads, without problems, that had been stored there for many years.

No. Nail polish