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All Springer/NP/PCP Air Gun Discussion General > UK Airgun Gate

TX200 breech seal, use Weihrauch?

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Jay308:
I had read a comment somewhere, that the HW 97K breech seal could be used in the TX?

Roadworthy:
I don't know what a Weihrauch uses for a breech seal.  The TX 200 uses two small O rings.

Jay308:

--- Quote from: Roadworthy on April 19, 2023, 09:46:52 PM ---I don't know what a Weihrauch uses for a breech seal.  The TX 200 uses two small O rings.

--- End quote ---

The Weihrauch is one piece, I do have new replacements o-rings from my TbT kit, but wasn’t sure if this was possible.  My cocking bar is rattling, so I should have replaced them when I tuned it(1k shots on the seals).  I might order the ARH versions as they are supposed to be thicker. 

Jay308:
Anyone replaced them with the comp tube still in the rifle?

AmBraCol:

--- Quote from: Jay308 on April 20, 2023, 08:34:20 AM ---
--- Quote from: Roadworthy on April 19, 2023, 09:46:52 PM ---I don't know what a Weihrauch uses for a breech seal.  The TX 200 uses two small O rings.

--- End quote ---

The Weihrauch is one piece, I do have new replacements o-rings from my TbT kit, but wasn’t sure if this was possible.  My cocking bar is rattling, so I should have replaced them when I tuned it(1k shots on the seals).  I might order the ARH versions as they are supposed to be thicker.

--- End quote ---

ARH sells two versions.  One, the more expensive, is a more heat resistant rubber. The other is pretty much a direct replacement for the factory seals.  My understanding is that there's a valid reason for the two donut seal approach as opposed to a cylindrical seal.  Anyway, I replaced mine with a standard black ring at the bottom (piston side) and the green, more resistant seal, at the top (chamber side).  The theory being, there's more heat and also more abrasion at the top of the stack so put the tougher seal there - and I've got an identical set for the next time I need to swap.  It's working fine, as shown by low single digit SD numbers over the chronograph.

As for replacing with the compression tube in place, it's "doable", but not very convenient.  Also, you're fiddling around with a cocked rifle which isn't a very advisable thing to do.  If you remove the spring to remove the danger you just as well remove the comp tube and do it right. But that's my take on it.

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