Thanks for all the advice. Superswivels is a good option. EdDanzer, apologies for not being too specific. Flow conditions are room temp water, 3/4" tube size, approx. 8 gpm, low pressure (~5 psi).
I have an application that requires using a rotating joint in a water pipe system. Existing 'Rotary Unions' are large and expensive, and probably oversized for my application (slow speed and moderate flowrate, not full rotation). Does anyone have any suggestions on a different kind of swivel or...