conformation seal sizes please

[jinxs]

Hi, I`ve just been given loads of o-rings ,now need to confirm the sizes so if any one could help I`d be grateful,
s427 transfer port o-ring = 6mm id x 1mm c/s,
s536 pressure gauge mount(top) = 4mm id x 2mm c/s
rn234 cylinder o-ring = 24mm id x 3mm c/s and lastly
rn219/9 pressure gauge o-ring = 8mm id x 2mm c/s.
Many thanks,
Cheers,
Steve