The GP Series multiple passage rotary unions are available in 2, 3, 4, 6, 8, 10 & 12 passage models. Modified or custom configurations are also available. All GP Series rotary unions incorporate DSTI's exclusive DynaSeal(TM) seals, which are suitable for vacuum & bi-directional pressures up to 7500 psi. All passages are individually sealed to allow use with dissimilar medias. Many of the GP Series rotary unions can also be ordered as RotaRing(TM) rotary union/electrical slip ring combination assemblies.