I have a pneumatic cylinder with a stripped fitting, which causes a slow leak. I took it to a machine shop and he tried to re-thread it but there wasn't enough good metal left to get a good thread. He told me there wasn't enough room for an oversize fitting and suggested I try liquid thread sealant.
Unfortunately, this hasn't worked. There is still a slow leak.
This is for a DIY RV loft type bed that uses 4 pneumatic cylinders to lift the bed up toward the ceiling, which will never need to support more than about 25 LBS or so - just the weight of the bed.
I'm thinking I should maybe try Blue Block or epoxy, but hoping to get some advice first.