Looking to store toys in a tube buried in the ground long term (years). I've done a lot of research of rust preventatives but not in this application.

I understand Ezox and RIG are great for normal storage. Will they work in this application. What about Mil-Spec Cosmoline?

Toys will be stored in a plastic bag made for this then put in another vacuum sealed bad then sealed tight in a waterproof air tight pre bought or homemade PVC container.

Any input is appreciated and thanks!

Vacuum seal weather tite storage. Maybe throw some silicon packets in there just in case.

Personally I'd use VCI bags, you don't even need to oil them and you'll get 20+ years of corrosion protection once sealed. Then throw them in a PVC tube or just bury em. I'm talking about 8mil thick bags, it's all I've ever used with great results.

http://www.polygunbag.com/

55 gallon of cosmoline heated to liquid.

place rifle in pvc container, fill container with hot cosmoline, cap and forget about ever using the rifle again.