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Nuraseal Sealing Products  |  Filton® Rotary Union Products

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Rotary P.B. Union

(Sizes 1/2" to 1")





Maintenance and Overhaul


• Remove the locking screw (4) which allows for the removal of locking ring (10).

• Remove the spindle (9) complete with bearing kit (8), circlip (7) and carbon subassembly of seal kit (5).

• Remove spacer (6), seal subassembly and gasket of seal kit (5) from the body (3).

• If type R.S., unscrew end fitting (1-R.S.) from the body, remove and replace the C/T Bearing (2).

• Hold spindle (9) in a vice, remove locking screws to enable carbon subassembly of seal kit (5) to be unscrewed, then remove gasket.

• Remove circlip (7) and press off bearing kit (8) from spindle (9).

• Discard and replace seal kit (5) and bearing kit (8). Handle seal kits with care to avoid damaging the precision lapped seal faces.

• Thoroughly clean all parts before reassembly (which is virtually the reverse of the above steps).

• After reassembly, follow the recommended installation procedures and allow for a suitable run-in period to ensure the seals are working correctly before refitting to the machine.



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Other P.B. Links

• Description & Dimensions

• Model Numbers

• Part Identification

• Maximum Operating Recommendations

• Flow Capacity

• Installation Procedures

• Maintenance and Overhaul

• Lubrication

• Download P.B. Union Manual.pdf


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Intro to Rotary Unions

Typical Applications

Rotary Union Models

•  R.E. (1/4" to 1-1/4")

•  P.B. (1/2" to 1)"

•  C.B. (1/4" to 1-1/4")
High Temperature

•  R.E.B. (1-1/2" to 6")

•  C.B.N. (1-1/2" to 6")
High Temperature)

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•  Syphon Elbows

•  Flexible Hoses

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