WTB sheridan valve piercing stem. Or assembly.

[Pogi Si David]

Looking for the cup seal pierce assembly or the whole valve assembly. Thank you.

[XEMON]

Does it leak or is it not piercing?

[Pogi Si David]

Pierces but leaks straight out of the barrel. The cup seal is misshaped, this was laid out in over 90* sun the orings and seals were melted.

[BrickHaus]

You can get valves from jg airguns I believe... upon looking they require an exchange, so they've figured out pressing a seal into the stem.

You have a pps dyna valve man figure out how to fix that one as its got better flow than stock. You could try to carefully clean the face up, or pick the seal out, and press a new one in.

The pick press operation is one I've wanted to master for a while, for your situation specifically. I probably have a stock valve with a good seal Id happily trade for that one if you aren't up to try.

[BrickHaus]

And are you sure its not the 12 g face seal that leaks? Thats honestly the most common seal to leak on sheridans. I have many old guns with mainly original seals. The face seals are newish is all.

[Pogi Si David]

Its not mine, its a friends. Yeah its forsure the valve seal. The marker was sat in 90* heat and every seal inside melted. Everything was replaced except the face seal. And it leaked down the barrel. The seal is also indented unevenly.