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Need help-breech O-ring size for AA S410 .22?

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JohnL
(@johnl)
Joined: 8 years ago
Posts: 97
Topic starter  

As the title says, I need the size for the breech O-ring for my .22 AA S410. I thought I had measured right, but no dice. Some help would be welcome!

Thanks,

John



   
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marflow
(@marflow)
Joined: 8 years ago
Posts: 1677
 

well Air Arms is one of the few that list o-ring seal but not that one but after do some searching a found this 

Air Arms S538 BS009 O-Ring 70 Sure Barrel Breach Seal .22 - Air Arms - Spares (drapers-airguns.co.uk)

seem a little small but what i found 

O-Ring Size Chart : The O-Ring Store LLC, We make getting O-Rings easy! (theoringstore.com)

my favorite o-ring source 

and then this tread give you the size 5.5mm x 1.5mm which makes sense 

AAS510 o-ring help. - Airguns & Guns Forum (gatewaytoairguns.org)

what would i do buy them both 

Downloads | Air Arms (air-arms.co.uk)

 

good luck 

mike



   
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DJNA
 DJNA
(@djna)
Joined: 6 years ago
Posts: 150
 

Hi, John - years ago I needed to replace Breach o-ring on my AA 410- I took the old o ring to Ace Hardware- was able to find replacement there & few spares, I don’t remember the size though. 
I just had mine completely re-sealed by David Slade of Airgunwerks last winter-Would think if you sent him a email he would let you know the exact size.



   
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sonnysan
(@sonnysan)
Joined: 8 years ago
Posts: 624
 

You can figure out any oring dimension on the planet with a dial caliper.  The only question is the hardness.  Every one I've come across in an airgun is 70A. 

https://smile.amazon.com/DIAL-CALIPER-SHOCK-PROOF-PLASTIC/dp/B01C6WHQ92/ref=sr_1_4?dchild=1&keywords=dial+caliper&qid=1624712938&sr=8-4

Once you find your dimensions, match it up in either the USA or common metric charts:

https://www.allorings.com/o-ring-size-charts-index

Finding them locally is another fun challenge.



   
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JohnL
(@johnl)
Joined: 8 years ago
Posts: 97
Topic starter  

Thanks for the replies all!

John



   
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