High Pressure Rotary Unions 

Duff-Norton’s Series 1900 Rotary Unions ® are
equipped with GR Seals suitable for most
transfer fluids. Standard models feature nickel
treated carbon steel construction, but are also
available in all stainless steel. The 1900 series
has been developed for very high pressure
applications (to 10,150 psi). The 1900 series is
equipped with a Double Acting Thrust Bearing
and a Bronze Bushing. The bearing permits
higher pressure, while the bushing increases
the guide of the shaft to allow faster rotating
speeds than series 1700.

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