Nozzle Leak down? / Swelling orings

[OMGWTF]

Recently installed:
Mask 3G Cylinder head & Piston head (sorbo tab)
Modify Air nozzle.

Problem:
When piston is pushed through cylinder and finger is held over the opening on the Cylinder head where the nozzle would sit (without nozzle present) air seal is tight and no leakage present.

Once nozzle is added and same test preformed, slight leak down is present, meaning that the air is slowly leaking out the back of the nozzle past the o-ring.

How much is an acceptable rate of loss (i.e leak down) IF any at all... in my mind there should be no leakage past the back of the nozzle, can someone confirm or denie my theory?

if there is no acceptable, air loss at the nozzle, since these are nitrile rings, any one attempt to swell the rings? if you have swelled the rings, what was your poison of choice.

Thank you for you help!

[Styrak]

Some leakage with the nozzle on is normal.

[Boyso]

Do you have another Nozzle at hand?

I have two Modify nozzles, and one is leaking just slightly. Try your stock Nozzle if you still have it.

[Kos-Mos]

They are not supposed to leak.

But in the even that they do, 24h in a bath of ultra light silicone oil usually solves it.

[OMGWTF]

Originally Posted by Kos-Mos

They are not supposed to leak.

But in the even that they do, 24h in a bath of ultra light silicone oil usually solves it.

ok well, I do not have any silicone oil on hand, unless you know of a place that might carry it locally (i.e. Crappy Tire, or other common place) or know of something else that could be used in its place, that would be of great service.

As for the stock nozzle, I think it was replaced, by the Orignal owner with a slightly longer nozzle, but It still produces the same amount of leakage from the rear of the air nozzle


Gun is also an mp5 TM

[Kos-Mos]

Local hobby shop. They all have it. If they don't have something like Royal Oil, they probably have 10wt oil that will work.

Transmission fluid is also supposed to work, but I can't confirm since I always had some silicon oil...