Flowserve BGM Dura Seal - Manual

Installation
Instructions
Experience In Motion
BGM Dura Seal

The Flowserve BGM Dura Seal is designed to keep bearing lubricant in the bearing frame. At
the same time, it keeps contamination out of the bearing frame. The BGM Dura Seal consists
of two major components: a stator assembly and a rotor assembly. The seals work in
conjunction with a "bull's-eye" sight gauge to completely isolate the bearing frame from
harmful contamination.
Temperature changes in the bearing housing will result in pressure fluctuations. Conventional
"constant level" oilers are not recommended. They are intolerant of such small pressure
changes.
Atmospheric Sealing of Bearing Frame
To isolate the bearing frame from environmental conditions such as high humidity, steam or
condensation, the following steps must be taken before seal assembly.
1. Remove bearing housing vents. They are a path for contamination.
2. Plug each vent.
3. Remove the "constant level" oiler
and replace it with a "bulls eye"
sight gauge. See Figure 1.
A minimum 3 /
8
" - 18 NPT tapped
hole must be provided to
accommodate the sight gauge.
4. When applying on equipment
using oil mist lubrication, provisions
must be made to allow oil mist flow
through the bearing housing.
Plug Vent
"Bulls Eye"
Sight Gauge
BGM Dura Seal
Remove
"Constant Level"
Oiler
Stator Installation Figure 1