RTI RTI Mora oring size help/Leak

[jeffhernandez]

What's the oring size in the picture and where can I buy it if available?
Mora lost all air by night and when I tried to air it up it does not hold any air.
Disassembled and found that oring damaged that goes into the square sized part.
Thanks for the help.

J.H

 

[Gerry52]

Hope a fellow RTI owner of the same model & caliber will respond. Don't you own a caliper? Indispensable to airgunners. Exploded diagrams on RTI website might list it (IF they have exploded diagram).

 

[Airgun Advisor]

 

[Airgun Advisor]

What's the oring size in the picture and where can I buy it if available?
Mora lost all air by night and when I tried to air it up it does not hold any air.
Disassembled and found that oring damaged that goes into the square sized part.
Thanks for the help.
View attachment 535477
J.H

looks like O-ring 20 in the diagram above.

 

[jeffhernandez]

looks like O-ring 20 in the diagram above.

Thanks. I found that diagram but I am pretty bad at figuring out which one was

Thanks for the help