Bell & Gossett P81629F Series 80 In-Line Mounted Centrifugal Pump - Manual (Page 25)

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1. O-ring
2. Coverplate
3. For 1-1/4 in. seal: 1-13/32 in. (3.571 cm)
4. For 1-5/8 in. seal: 1-1/4 in. (3.175 cm)
5. Seal locking collar
6. Seal cap bolt
7. Seal cap
8. O-ring
9. Motor end
Figure 3: Single mechanical seal (1531–S)
Assemble the 2-inch single mechanical seal (80-S)
1. Lubricate the shaft sleeve with soapy water.
Do not use a petroleum lubricant.
2. Slide the stationary seal with an O-ring onto the shaft.
3. Slide the rotating portion of the seal assembly onto the shaft sleeve and lock it in
place a distance of 55/64 in. (2.813 cm) from the seal collar to the impeller end of the
shaft sleeve.
4. Assemble the coverplate onto the bracket.
5. Tighten the capscrews according to the Capscrew torque table.
6. Attach the seal gland to the coverplate.
7. Tighten the capscrews to the seal gland according to the Capscrew torque table.
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Maintenance
Series 80 Installation, Operation, and Maintenance Manual 23