The 7/8"-14 threaded adapter fittings are compatible with 10AN ORB (O-ring boss) ports. Because the threads on these fittings are not used for sealing, PTFE paste or thread sealant is not required.
ORB ports are an industry standard and found on many automotive plumbing products, including most Radium products.
ORB ports are an industry standard and found on many automotive plumbing products, including most Radium products.