Operating Manual
The seal comprises of a rotary face which is
sealed to the shaft by an 'O' ring. A wave
spring(s) provide a force to maintain face to
face contact. Rotation is provided by socket
set screws which are tightened onto the shaft.
The stationary face is located in the rotorcase
and is prevented from rotating by three pins. A
seal housing with lip seal encloses the seal and
runs on a shaft sleeve.
Seal faces are brittle.
Take exteme care when handling.
Removing the Single Flushed Mechanical
Seal
1. To release the seal from the shaft loosen
the socket set screws through the flushing
connection.
2. Remove the seal housing retaining nuts
and pull it away from the rotorcase.
3. Remove the rotorcase with the stationary
sealing face still within its bore, taking
care not to chip the face.
4. Carefully remove the remaining part of
the seal from the shaft followed by the
seal housing, lip seal and spacer.
Item
1
2
3
4
5
6
7
8
9
10
11
Description
Stationary Face 'O' Ring
Stationary Face
Rotary Face
Shaft 'O' Ring
Wave Spring
Drive Ring
Spacer O' Ring
Spacer
Gasket
Seal Housing
Lip Seal
11.2 Single Mechanical Seal
Fitting the Single Flushed Mechanical Seal
1. Press the lip seal into the seal housing.
2. Lubricate spacer 'O' ring, fit into spacer
and push onto the shaft.
3. Carefully guide the seal housing with lip
seal over the spacer.
4. Use a solvent to wipe the lapped surface
of the faces until perfectly clean, being
extremely careful not to scratch the faces.
5. Lightly lubricate the 'O' ring and shaft end
with a silicon grease (food quality if
necessary).
6. Firmly press the stationary face 'O' ring
onto the stationary face and locate them
within the rotorcase bore over the roll
pins.
7. Push 'O' ring within seal face bore and
gently slide the seal onto the shaft until it
reaches the spacer.
8. Tighten the socket set screws through the
flushing holes.
9. The rotorcase can now be refitted whilst
at the same time locating and tightening
the seal housing nuts.
38
