Bottle jack seals

So i got it back together and it seems to work. I cannot get it to seal at the bottom of the resivoir though. There was no seal there when it came apart. I have since put a rubber seal in there but no luck. Anyone know the secret to getting this to seat?
The reservoir isn't under pressure, it's just a tank; some Permatex gasket sealant should keep that
joint from leaking. Any auto shop can sell you a tube of suitable goo. There's a slight
possibility of cracks or voids in the cast metal, probably worth a close look.
 
The reservoir isn't under pressure, it's just a tank; some Permatex gasket sealant should keep that
joint from leaking. Any auto shop can sell you a tube of suitable goo. There's a slight
possibility of cracks or voids in the cast metal, probably worth a close look.
I think i am going to go this route.
 
In general, piston seals can be found in the Hercules catalog. The information will include the max psi rating.
 
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