Just gonna throw this out there. If things have gotten so bad that you’re tearing open your zip locked guns, do you really think staining is high on the list of priorities?If done in plastic bags is there risk of staining from reaction with solvents/oils if the plastic comes in direct contact with the gun?
Just gonna throw this out there. If things have gotten so bad that you’re tearing open your zip locked guns, do you really think staining is high on the list of priorities?
I'd think that if the bag was truly airtight you wouldn't need to fool with oil or grease.
Maybe.
How humid is the ambient air at the time of sealing? How efficient is the vacuum sealer? Can it truly remove ALL the air? Or enough of the air that there's not going to be any reactions with the remaining O2, H2O, and Fe?
If it were ME, I'd likely give all the steel I could a good wiping down with an anti-corrosion product and leave the gun otherwise lubed "as normal" before sealing it. That's provided that I'd use a proper sealing bag.
Throw in a desiccant and an O2 eater for good measure?