https://www.caplugs.com/p/threaded-plastic-caps-cd
Threaded Plastic Caps for Flared JIC Fittings | CD Series | Caplugs
CD Series Threaded Plastic Caps for flared JIC fittings protect against dirt, moisture, and other contaminants.
plastic capsjic fittingscd seriesthreaded
https://www.go2marine.com/collections/hydraulic-fittings
Marine Hydraulic Fittings: Stainless JIC, NPT & ORB
Leak-free hydraulic connections. Shop stainless steel and plated steel fittings. JIC 37° flare, NPT pipe, and O-Ring Boss adapters.
hydraulic fittingsmarinestainlessjicnpt