Beeman P1 Breech Seal

[Robert 5mm]

I have an older Beeman P1 SN 305767 and I ordered an O-Ring breech seal from Pyramyd Air for prior to SN 310911.
I received the seal from Pyramyd Air - completely wrong size - larger - my P1 has a O-Ring seal that is maybe an 008.
O-Ring size 008 = 3/16 ID x 5/16 OD x 1/16 CS.
Does anyone know what my 1986 Beeman P1 requires for a breech seal ? Is it metric ?
I am going to order O-Rings from the O-Ring Store
( Pyramyd Air prices of $7.99 each for a single O-Ring is high and their service is not very good ) IMO.

[Roadworthy]

I found breech seals for my old Diana 34 at Lowe's - or was it Home Depot?  They had packages of ten O rings of the proper size for cheap - probably a couple of bucks - in the plumbing department.  Take your old O ring when you go shopping and compare it.  My Diana 34 is obviously metric but a standard O ring works fine.

[WyoMan]

Hi Robert, an 009 fits perfectly in my 2015 HW45s. But I'm not sure about past models. I agree that buying an o-ring (as a service part) is not the best way to go if you can get the right size from the theoringstore. Maybe order a few in different sizes.... You'll be paying the same for shipping. Not much help, sorry

Wyo

[Stinger177]

JG Airguns has two listings for that seal, but no descriptions. The fact that there are two listings tells me that there is a difference. Email them and tell them what you're looking for and they can probably help you.

Here's the page with that parts list.

https://www.jgairguns.biz/catalog/index.php?cPath=78_377_379

[Robert 5mm]

Pyramyd Air also has two listings 1) for prior to SN 310911 2) after SN 310911.
My SN is 305767 - but t has a smaller O-Ring then what Pyramyd sent to me.
My P1 has one sized close to 008 - so I am going to order several sizes from the online O-Ring Store.
( they also have reasonable prices and shipping costs ).