Flowserve Single Outside Seal - Manual (Page 3)

3
1.6 Check shaft or sleeve OD, box bore, box depth, and distance
to the first obstruction to ensure that they are dimensionally the
same as shown on the seal assembly drawing.
1.7 Check gland pilot and bolt holes to ensure they are adaptable
to the equipment and are the same as shown on the assembly
drawing.
1.8 Handle all seal parts with care, they are manufactured to precise
tolerances. The seal faces; rotating seal face and stationary seal
face are of special importance. These two sealing faces are lapped
flat to within three light bands (34.8 millionths of an inch).
Keep the seal faces perfectly clean at all times.
Single Outside Seal Installation
2 Single End Suction Vertical Split Case and Vertical
In-Line Pumps (1 box)
2.1 Lubricate the shaft or sleeve lightly with silicone lubricant
provided with the seal before installing any seal parts.
2.2 Install the rotating face gasket O-ring into the bore of the
rotating seal face.
2.3 Engage the rotating assembly consisting of the spring holder,
springs, and seal drive with the rotating face to form the rotating
assembly. Be sure any drive pins in the seal drive engage the slots
in the rotating face. Handle PTFE U-cup rings and graphite rotating
face gaskets with extreme care. U-cup rings must be assembled
individually and not pushed on the shaft or sleeve while they are
part of the rotating face or rotating assembly. Avoid nicking or
pinching either lip on the U-cup rings. Use both U-cup rings,
they work together to form an effective seal.
2.4 Install the rotating seal parts spring holder first onto the shaft or
sleeve in the proper sequence with the face of the rotating face
facing the impeller. Use a slight twisting motion for any complete
rotary unit containing O-ring rotating face gaskets. Place rotating
assembly unit as close as possible to the first obstruction, usually
the radial bearing.