Graco 312348B User Manual
Instructions - Parts
Old Seal Kits
312348B
To replace proportioning pump piston seal sets or cylinder seal sets used on Gusmer and
Old Graco H-25 and H-XP2 Hydraulic Proportioners.
Important Safety Instructions
Read all warnings and instructions in proportioning
pump manual 311391. Save these instructions.
Piston Seal Kits, see page 2
Cylinder Seal Kits for A-Side Pumps, see page 2
Cylinder Seal Kits for B-Side Pumps, see page 4
Seal Kit Installation, see page 5
Piston Seal Kits for A-Side and B-Side Pumps
Parts with a checkmark (✓) in the following table
are included in the kits.
Before beginning, follow the Pressure Relief Proce-
dure in proportioning pump manual 311391.
Proportioning
Pump Size
28 261756
40 261726
44 297845
48 261729
60 261732
80 298013
96 297848
104 261753
120 298011
B
A
Kit
Part No.
C
Seal Wiper
D
A
(Piston
Ring)
B
(Wear
Ring)
C
(Piston
Seal
Support)
D
(Piston
Seal)
✔✔
✔✔
✔✔✔✔
✔✔
✔✔
✔✔
✔✔✔✔
✔✔
✔✔
E
C
E
(Piston
Support
Washer)
297184 1
295279 1
A
Fig.
2
2
2
2
2
2
2
1
1
Apply Loctite to threads and
1
FIG. 1: Piston Seal Kit
2 312348B
torque; see Table 1 for correct
torque measurement.
FIG. 2: Piston Seal Kit
1
Apply Loctite to threads.
TI8048a
Cylinder Seal Kits for A-Side Pumps
Parts with a checkmark (✓) in the following table
are included in the kits.
Before beginning, follow the Pressure Relief Proce-
dure in proportioning pump manual 311391.
Proportioning
Pump Size
40 261724
60 261730
80 261733
96 297871
104 261754
120 298010
* Not included in kit.
Kit Part
No.
E
A
(Cylinder
Seal)
✔✔✔
✔✔✔
✔✔✔
✔✔✔
✔✔✔
✔✔✔
A
C
(Gasket)D(Bearing)
D
G
* E
(Outlet
Flange)
295064 295159 295243
295066 295159 295244
296803 295159 295245
295069 295159 295247
295070 295159 295248
295072 295159
* F
(Retainer
Flange)
* G
(Adapter
Ring)
F
C
FIG. 3: Cylinder Seal Kit for A-Side Pumps
312348B 3
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