Straight O-Ring Boss
1.
Inspect the O-ring boss seat of fitting for dirt or defects.
2.
Lubricate the O-ring with O-ring lube or petroleum jelly.
3.
Place tape (preferably electrical tape) over the threads to protect the O-ring.
4.
Slide the O-ring over the tape and into the O-ring groove of fitting.
5.
Tighten fitting until the hex bottoms out.
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