Operating Manual
Single Mechanical Seal
ITEM
DESCRIPTION
1
Stationary Face 'O' Ring
2
Stationary Face
3
Rotary Face
4
Rotary Face 'O' Ring
5
Wave Spring
6
Drive Spring
The seal comprises of a rotary face which is
sealed to the shaft by an 'O' ring. A wave spring
provides 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.
SEAL FACES ARE BRITTLE, TAKE
EXTREME CARE WHEN HANDLING
REMOVING THE SINGLE MECHANICAL
SEAL
1.
To release the seal from the shaft loosen
the socket set screws.
2.
Remove the rotorcase with the stationary
sealing face still within its bore, taking
care not to chip the face.
3.
Carefully remove the remaining part of
the seal from the shaft.
Fitting the Single Mechanical Seal
1.
Using a solvent cleaner wipe the lapped
surface of the seal faces until perfectly
clean.
2.
Lubricate the 'O' ring and shaft end with a
silicon grease (food quality if necessary).
3.
Firmly press the stationary face 'O' ring
onto the stationary face edge and locate
within the rotorcase bore.
4.
Mark the shaft to indicate the seal setting
length.
5.
Push the 'O' ring within seal assembly
face bore and gently slide the seal onto
the shaft until it reaches the setting
position.
6.
Tighten the socket set screw.
SEAL TYPE
SETTING
DIMENSION
CARBON (UNPINNED)
TUNGSTEN CARBIDE
27.8mm
SILICON CARBIDE
CARBON (PINNED)
30.0mm
8.2 Single Mechanical Seal
21
