BSA BSA R10 O-Ring Sizes

[BrazosbyNemo]

Does anyone know O-ring sizes for an R10? In particular the air gauge and the bottle? Any o-ring size would be helpful. Thanks.

 

[xsarfc9x]

I used an oring from a Harbor Freight kit for that one. Don’t recall the size but if you get a metric kit it will have it.

 

[bchannell]

Yeah, me too. BSA is the only manufacturer I'm aware of that keeps oring sizes such a well guarded secret. I gave up and bit the bullet and bought several kits so I have what I need on hand, but it still kinda gripes me. I mean, I just can't imagine orings being a big money maker for them unless they produce a rifle that constantly needs them..... there's a thought. OK, I'm done ranting.
I tried to measure the orings, but it's hard to measure rubber accurately and the tiny ones are impossible to measure, so I'll just go with kits.

 

[BrazosbyNemo]

There really needs to be a sticky post at the top of the PCP forum where people post o-ring sizes for various rifles. For example a Marauder you can get all the 0-rings at Home Depot except for the transfer port. They should be listed. I no longer own a BSA R10 (was asking this for a friend) but I had a few of the oring sizes figured out at the time. It would be a great resource.

 

[oOmpH]

Here you go:

View attachment BSA R-10 O Ring Sizes.pdf

 

[BrazosbyNemo]

Here you go:

View attachment 422316

Perfect. Thanks.