© 2024 Nordson Corporation
1044131-06
9-6
25B 4:1 Plated Steel Hydraulic Section Parts
4:1 Replacement Packing Glands
Packing Glands and Hydraulic Service Kits for 4:1 25B Pump
Packings Type A Type D Type F Type G Type U
Upper Packing — — — 248049 (A) —
Hydraulic Service Kits 106360 (B) 714898 (B)
106303
(B)
106390 (C) 335379 (B)
NOTE: A. Complete packing glands, including external O-ring and back-up ring.
B. Kits include upper packing glands, lower packings and hydraulic section O-rings. Refer to page 9-9.
C. Type G packing gland kit includes parts to rebuild the upper packing gland and replace the lower packings
and hydraulic section O-rings. The kit does not include the upper gland housing or internal retaining ring.
Reuse your existing housing and retaining ring. Refer to Type G Packing Gland Service Kit on page 9-8 for
the kit parts list..
Packing Gland Materials and Applications
Type Material Applications
A
Cotton duck saturated with buna-nitrile and
coated with graphite
Good for less abrasive applications where strong solvents are
not used. Contains graphite coating to reduce friction.
D
Cotton duck and synthetic fabric saturated
with buna-nitrile and PTFE
Good for less abrasive applications where strong solvents are
not used. Contains PTFE to reduce friction.
F PTFE V-rings stacked with leather V-rings
strong solvents and abrasive materials.
G Polyurethane U-cups
Frequently used with waterborne materials. Not compatible with
some solvents. Do not use with aromatic hydrocarbon solvents
U
Ultra-high molecular weight polyethylene
(UHMWPE)
Good for highly abrasive materials. Compatible with waterbornes
and most solventbornes. Slight swelling may occur when
exposed to aromatic hydrocarbon solvents.
4:1 Type F Hydraulic Section Parts
Pressure Ball Check Kit
See Figure 9-1 for parts locations.
Item Part Description Quantity Note
— 106309 SERVICE KIT, pressure check, 2:1, 4:1 1
8 900014 • BALL, 440 stainless steel, 0.875 in., 100 1
9 945022 • O-RING, hotpaint, 3/4 in. tube 1
10 246206 • SEAT, ball, pressure 1
Continued...
11 941440 • O-RING, hotpaint, 2.50 x 2.688 x 0.094 in. 2 A
NS 940421 • O-RING, hotpaint, 3.25 x 3.375 x 0.062 in. 2 B
NOTE: A. Used on 4:1 pump.
B. Used on 2:1 pump.
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