The shroud ID is 0.740"
The OD of the O-ring as installed in the Air Strippers groove is 0.685"
Th Air stripper OD is bigger than the O-ring closer to the 0.740" of the shroud (did not measure the OD major diameter of the air stripper and it is not handy to do so right now)
So, why bother to have the O-ring?
Should the O-ring be a snug fit on the inside of the shroud?
The OD of the O-ring as installed in the Air Strippers groove is 0.685"
Th Air stripper OD is bigger than the O-ring closer to the 0.740" of the shroud (did not measure the OD major diameter of the air stripper and it is not handy to do so right now)
So, why bother to have the O-ring?
Should the O-ring be a snug fit on the inside of the shroud?