Stainless steel sight gauge adapter with back plug.  (allows you to also install a thermometer or temperature probe)

Adapter is supplied with

1 flat silicone ring

1 stainless steel Backnut and silicone ring that fits in groove

1 stainless steel washer

Features 1/2" pipe thread and a 1/8" FPT to screw a sight gauge into.

compatible with our 16" sight gauge

You can also use our through wall bulkhead for an excellent female fitting for the adapter