Single passage high temperature swivel joint designed to provide rotational movement to collector piping in a parabolic trough concentrated solar power (CSP) field. Features include a specialized high temperature packing sealing system (suitable for 1,000 F), internal corrosion-resistant bearings, and a customer-specified design for direct welding to the piping system. This unit is also designed for medias including high temperature steam and heat transfer fluid (HTF).