Walther LG55 piston seal?October 14 2011 at 8:07 PM
|Emmett (Login cedestech)|
Need a plastic one....
Anyone have a idea were to get?
Try JG Airguns
|October 14 2011, 8:22 PM |
|October 14 2011, 10:06 PM |
The only seal they show "looks like" a small apex. Not the same. Mine snaps over a small button on the piston.
I wish it was older and used a leather seal.... I could make one of those....
I don't think that's a standard seal
|October 14 2011, 10:40 PM |
At least it is unlike any in the three or four gun I've had. The pics are also a bit blurry, but it looks like there has been a black disk added to the top of the piston as a seal support. Most LG55 pistons I have had have a beveled edge that terminates at the flat top of the piston. It looks like a 45 has been turned off the piston edge.
It's quite possible that you can remove this modification and apply a standard seal, assuming that the threaded post on top hasn't been changed.
Many of the threaded seal posts get bent due to being shot with a worn out seal. It's an odd thread that is almost impossible to find, so ost people conver the piston to use an R-7 seal by turning of the threaded post, then drilling the piston for a screw to add the HW seal adapter. JG airguns can make this mod for you, and it's well worth it in a gun that you plan to use as a shooter.
Re: I don't think that's a standard seal
|October 14 2011, 11:12 PM |
Can You Post One w/ the Seal In Focus?
|October 15 2011, 5:59 AM |
That might help. The old seal you have actually looks melted in the out-of-focus view. That may have been a homemade part, too, that wasn't designed to stand up to the beating it has to take.
Since it may indeed be customized (with that intermediary washer I can see that's been added to the original threads on the piston), maybe you can use an Apex or other JM seal and size the OD. The opening where it snaps on the piston will also need to match whatever is on there now.
The other plan would be to take off the homemade, custom-threaded piece and go back to using the original style seal from JGA. He also sells the threaded nut that holds the OEM piston seal onto the threads, IF they didn't re-size the threads, too.
Adding all of that up, you may have your work cut out for you there.
Ed, The Airgun Tune-Meister
"We can rebuild the squirrel. Make him stronger, faster...We have the technology"---Skyler M.
|October 15 2011, 9:00 AM |
I'm not certain.........
|October 15 2011, 9:23 AM |
Re: I'm not certain.........
|October 15 2011, 9:30 AM |
I don't think so... The metal part in the piston the seal snaps on definantly looks like it is
threaded onto a stud coming from the piston.
Ed K actually came up with a brilliant solution that if it works I'll post up pics for future refrence.
I was hoping someone would recognize it and say "yeah, that is a XYZ seal and you can get them here"
|October 15 2011, 3:20 PM |
screw the metal thing off, turn the diameter down so it fits inside an R-7 seal, and screw it back on upside down using it as a Weihrauch seal adapter. You'll probably need some additional spacing washers to get that to work.
Looks like the part on the front is reversed
|October 15 2011, 5:09 PM |
The tapered part at the front looks reversed from what I remember when rebuilding my LG55. I had to make a special forked wrench to grip that part with it's two slots in each side, kind of like a wide flat screw driver blade with a slot cut out for the threaded stem.
I think the taper was facing the piston, and widest part was facing the front, like you would expect a dovetail to work. I had a hard time screwing the dovetailed nut off the threaded stem but was able to save it. I got my piston seal from JG Airguns, and it was clear I believe. Screwed it back tight and all was well.