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Old 09-04-2020, 03:40 PM
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572Camaro 572Camaro is offline
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John!
Thanks for the call last week.

My two cents here regarding your O-ring boss question:

O - ring boss..,

In the nuclear industry,
We refer to your fitting as an ďSAE/MS Straight thread (ST)Ē

I refer to SAE J1926/1 and ISO 11926-1 regarding straight thread boss fittings.

P.S. itís confusing

P.S.2: The only reason an o-ring boss will fail is if you donít lubricate the o-ring during installation.., but you already know that.
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