Weihrauch 25mm seal dovetail dimensions?

[Walnut92]

Am looking to possibly use a 25mm modern Weihrauch piston seal (with the internal - thus female - dovetail) in restoring another gun with 25mm cylinder.

My two questions are

1. Does someone have the precise dimensions of the piston dovetail (the male part) as I'd need these to machine the external dovetail on a replacement piston?
2. And what is the length of the Weihrauch seal?


Thanks.

[T 20]

Here you go :-

https://www.airgunbbs.com/showthread...95#post7570495

25mm HW seal is about 9.5 - 10mm long

[Walnut92]

Super, thank you.

[T 20]

Super, thank you.

No problem, Sir.

Though I must admit that in such a situation I favour using a TX200 25mm seal as they're about 4mm shorter, and the seal arbor is less complex to machine.



All the best Mick

[Walnut92]

No problem, Sir.

Though I must admit that in such a situation I favour using a TX200 25mm seal as they're abut 4mm shorter, and the seal arbor is less complex to machine.



All the best Mick

I hadn't considered that Mick - what's the arbor like for a TX200 seal? The shorter length might help me here too...

[T 20]

I hadn't considered that Mick - what's the arbor like for a TX200 seal? The shorter length might help me here too...

The arbor looks like this :-

image.jpg

And the dimensions are so :-

image.jpg

I gave no length for the arbor as I machine to the length of the seal --- I normally fit the seal to a slightly long arbor and then machine the arbor back to be flush with the seal front face.



All the best Mick

[Walnut92]

Really helpful Mick, thank you.

[T 20]

Really helpful Mick, thank you.

No problem.