Assemble The Double Mechanical Seal (80-D) - Bell and Gossett 80 Series Instruction Manual

6.4.4 Assemble the double mechanical seal (80-D)

1. Lubricate the shaft sleeve, seal cap, and coverplate cavity with soapy water.
Do not use a petroleum lubricant.
2. Insert a stationary seal and O-ring into the seal cap.
For the 1-1/4 in. ID seal, both parts are housed in the coverplate. A seal cap gasket is
not used.
1. O-rings
2. Motor end
Figure 5: Double mechanical seal
3. Insert another stationary seal and O-ring into the coverplate.
4. Slide the seal cap onto the shaft.
5. Replace the seal cap gasket.
6. Slide the rotating portion of the seal assembly onto the shaft sleeve.
7. Assemble the coverplate onto the bracket.
8. Tighten the capscrews according to the Capscrew torque values table.
9. Attach the seal cap to the coverplate.
10.Tighten the hex nuts on the seal cap bolts according to the Capscrew torque values
table.
Series 80 INSTRUCTION MANUAL
1. Seal gland
2. Coverplate
3. For 2 in. seal: 55/64 in. (2.813 cm)
4. Seal locking collar
5. O-ring
6. Seal gland capscrew
Figure 4: 2-inch single mechanical seal
2
1 1
6 Maintenance
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