XS B-21 Seals

[Artie]

My B21 is due for new seals. Does anyone know of a current supplier for the piston & breech seals or are RWS48 seals suitable?  Thanks, Artie.

[paddyfritz]

I used a Diana piston seal on mine.

[Roadworthy]

If the Diana seals work, I generally get my seals from Air Rifle Headquarters. 

Vortek is also an option.

[lefteyeshot]

B3 breach seal will probably work in it. If the the piston seal is the type snaps over the end of the piston the B3 piston seal will probably work.

[Artie]

Thanks folks. I haven't fired it in several years till a few days ago. The breach seal is soft, deteriorating and stuck to the barrel, remaining there after I test fired it. May as well change both.

[Nathan]

It will use the same seals as the Diana side levers including breech seal.

http://www.airrifleheadquarters.com/catalog/item/251485/43075.htm

http://www.airrifleheadquarters.com/catalog/item/251485/10228725.htm

Years ago I had a .22 B21/22 sidelever and IIRC picked up better than 40 fps (w/ mid weight pellets) and a much better firing cycle with the addition of Macarri parts (used the stock spring). The stock piston seal was noticeably undersized.

I often wish I had kept that gun............

Nathan

[Artie]

I'm retired Army and grew up with a gun, hunting since I was seven. Never fired a pellet/bb gun growing up, the old man would never allow me to. I was 50+ before touching one, the B21 we're discussing. My first pellet rifle. Googled BAM B21, tore it down, polished, tuned, cussed and caressed it. But mainly I cussed it. Closeted until 12-15 pellet rifles/years later and I'm digging around in the closet for something... Now here we are. Wished mine was a 22.