Even though we don’t sell zippers we all use them and know how frustrating it can be when one becomes frozen. This morning I was going through my email and noticed an article published by BoatUS on how to unstick frozen zippers.
I have not tried using vinegar but the next time I have this problem with a corroded zipper my first trip will be to the pantry. My guess is this will work with salt water corrosion, zippers stuck for other reasons might require different techniques. With the nylon coil type I have found when they get stiff and difficult to use some baby oil does the trick. If you have other tricks, let me know.