Sealing Locknut (1/2" NPT)

This custom made lock nut has an O-ring grove for a size 212 O-ring.It's the perfect lock nut for a watertight seal though your kettle wall.

The groove give O-ring the perfect 20% compression to guarantee a good seal and long lifespan.
The fitting completely covers the O-ring to protect it.

This locknut has NPSL thread, which is a thread spec for locknuts to work with NPT.