In search of Walther LGV Spezial breech seal Info please...
I am in need of help from the learned members of the community. I've Googled and searched the Yellow Archives but cannot find any information about the breech seal. I seem to recall seeing an old parts diagram some time ago that also showed a "breech seal spacer." If anyone has information about the proper setup, I would be grateful. If anyone has any available for sale, I would be interested in purchasing several, as I've had this seal pop out a few times -- talk about sweating bullets (pellets?) as I'm down on all fours looking for it! Thank you to all in advance.
you could use a square o-ring for better surface area the size, I'm still looking
The OEM breech seal looks like a flattened O-ring, but I’ve had plain old O-rings in both my LGV’s for some time and they work fine.
I don’t recall the exact size, but O-rings are preposterously cheap to buy online. I measured the opening and ordered a selection in several sizes that I thought would be close. I remember I got over a dozen rings for pocket change...the postage was literally more than the material.
Remember that metric O-rings are sized by the inside diameter and material thickness. A 5.0 x 1.0 ring is 7 mm outside diameter for example.
You could always sand the face of the ring to get closer to the factory configuration, and use a bit of rubber cement to help keep it from taking leave.
they will ship to the states but just measure it up and go to the O'ring store and get some different sizes there some 70's and 90's hardness, it seem that they use a spacer behind the seal as does the Diana pistols to make the seal more proud
the one thing about that type of breech seal is that several O-rings might work well and I don't think a factory seal is needed
if you have a a 6 inch metal ruler that has inch and metric on it measure the seal area and you should be good to go and if you don't have a 6 inch metal ruler buy one a very handy tool to have, a General No.311 me is the one I like
now on Waffencenter Gotha Enrico will do a great job for you but the ordering the first time can be a head scratcher you would need to wire transfer the money and the shipping is way to high for small orders and DHL German post is as slow as anything have seen and have never figured out if it is a Germany problem or when the package gets to the States it sits in a container for weeks
the O-ring store is in Idaho and they are fast shipper, just great to deal with
that all I got looked for a good while for a size and came up empty
take care and let us know the size that works best for you
As was mentioned earlier, measure the ID and CS (cross section) of the old seal. The cross section is the 'cord' that forms the ring. Don't compress or stretch the o-ring.
In the States, these 2 places have the best metric oring selections.
Maryland Metrics (800.638.1830)
As both Mike's have mentioned in the second and third posts, it's possible that the seal is square. Because the original seal in the rifle feels slightly flattened and may actually be square, I've decided to order the original seal from JG Airguns as Ed suggested. I think that taking measurements from a new seal will provide more accurate specs -- I will follow up once they've arrived. Thank you everyone!
Thanks to Ed (@ekmeister) for recommending JG Airguns (and the folks at JG Airguns), I received my order for Walther LGV breech seals very quickly. I had ordered part number WAL2185831 (Breech Seal O-Ring, $3.50) and assuming that it is a genuine Walther seal, it is indeed round. Repeating what Mike Driskill and Chuck have said, "Remember that metric O-rings are sized by the inside diameter and material thickness. A 5.0 x 1.0 ring is 7 mm outside diameter for example," the breech seal would be 6.0 x 2.0 (10.0 mm O.D.).
Seeing that it was available, I had also ordered part number WAL2141264 (Breech Seal Shim, $3.25). It’s made of metal and it measures 7.0 x 1.5 (also 10.0 mm O.D.) but has an additional dimension of .10 mm in thickness. Does .004” make a substantial difference behind the breech seal? Perhaps not but for $3.25, I was willing to go with it to return the rifle to original specs. Besides, I had yet to reach the minimum order amount of $15 so the decision was easy.
The new seal appeared to "snap" into place and I am under the impression that it is quite secure and will not fall out like a worn, compressed seal. The LGV's POI and accuracy were unchanged so my conclusion is that the old seal was still doing its job despite it feeling slightly less supple and compacted compared to the new seal. Knowing the size will make it possible to test the viability of substituting readily available O-rings in the absence of the real thing.
I would like to thank everyone for their contribution, this has been an enlightening experience.
You're welcome. Glad you got it sorted out, and at a good price too.
Safe and Happy Shooting!
Ed, the Airgun TuneMeister