Posted by Jim.ME on December 10, 2021 at 15:43:01 from (67.242.178.40):
In Reply to: Hyd pics posted by 300jk on December 10, 2021 at 14:07:47:
Quote: CVPost-300jk (quoted from post at 19:34:08 12/10/21) There was not flat for the o ring to seal on. I have no idea why it never leaked. It should have probably but didnt.
The O-ring does not seal on a flat surface. The port on the cylinder should have a slight tapered counterbore leading into the threads. The O-ring gets compressed in that area. Your pictures of the O-ring on the fitting show it has been compressed in that manner. Post a picture of the inside of the port on the cylinder and I think the tapered counterbore will show.
Picture of a typical O-ring Boss sealing arrangement for a straight-line fitting, like your hose end, from a Parker catalog. Elbow adapters and other fittings needing positioning often use a nut and washer made on the fitting above the O-ring so it can be sealed in different orientations.
This post was edited by Jim.ME on 12/10/2021 at 04:07 pm.
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