Flowserve BGM Dura Seal - Manual (Page 3)

Rotor Assembly Installation
1. Lightly lubricate the rotor O-ring inside diameter with the silicone grease provided with
the BGM Dura Seal .
2. Break the sharp edges of shaft keyways or grooves using a file, emery cloth, etc., to
protect the O-ring from being cut or nicked.
3. Use silicone grease to lightly lubricate the shaft that the BGM rotor has to slide over.
To first obstruction
Face of seal housing to be square
to the axis of the shaft
to within 0.005" (0.13mm) FIM
Shaft or sleeve OD
+0.001" (+0.03mm)
-0.002" ( -0.05mm)
Housing
Bore
±
0.001
or
+0.000"
-0.002"
Bearings must be in good condition
Maximum lateral or axial movement of shaft (end play) 0.015" FIM
Housing bore to be concentric with shaft 0.003" FIM
Maximum dynamic shaft deflection at face of housing 0.002" FIM
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Stator O-Ring
Rotor
Stator
Rotor O-Ring
4. Gently slide the rotor along the shaft so that the rotor face seats against the stator face.
Make certain the silicone lubricant does not get on the seal face.
5. Use light finger pressure to ensure the seal faces are making contact.
6. Hold the shaft stationary and rotate the rotor a minimum of one revolution to evenly spread
out the silicone grease.
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