An Airgun O Ring database

[masd]

OK, here goes. After spending ages trying to get this info, surprised nobody has posted it before, here is the list of seals for the Brocock Enigma in .22. All are imperial sizes. Please decide on each section before just buying (I thought the seal kit available was very expensive so avoided that route). I have a friend who owns a seal company and we went through his boxes and found the right ones for each.

Action chamber seal for high pressure cylinder inlet - BS615, though this is quite a special size. My friend didnt have any so I used a BS112
High pressure reservoir seals (x2) - BS213 officially but I found a BS212 fitted better
Gun barrel seal (.22 - not sure about .177) - BS009
Grub screw on underside of action chamber through which the transfer port is drilled - BS009
Fill valve metal bonded seal - 1/8" BSP Dowty seal
Fill valve check valve o-ring - BS004 supposedly but I am in the process of re-engineering mine as I dont like the way the o-ring sits (pic below of modified version - used epoxy on the shaft and put it in a Dremel type tool to machine it to a better fitting size)
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