SPX TG H15-50, Instruction Manual, Page: 25 / 110

25 A.0500.351 – IM-TGH/07.02 EN (10/2015)
3.16 Shaft sealings
3.16.1 Packed gland
TG H pump size
2-32
3-32
6-40
15-50
23-65
58-80 86-100 185-125 360-150
Shaft diameter 16 22 32 40 45 55 65
Section width 5x 6 8 8 10 10 10 10
Lantern ring width 12 16 16 20 20 20 20
Dimensions in mm
3.16.2 Packing ring materials
TC
Most universal solution.
Woven shaft packing consisting of PTFE yarns with incorporated graphite and sliding matters (yarns
GORE-GFO). Extreme low coefficient of friction, good thermal conductivity, high suppleness and
volume stability. Suitable for general applications.
Application temperature: -200°C to +280°C
Chemical resistance:
pH 0 – 14
AW
Strong fibres.
Woven shaft packing consisting of white elastic synthetic aramide yarns with silicon free lubricating
matter. Wear resistant without damaging the shaft, high section density and structure strength, good
sliding properties. Used where a strong yarn is necessary e.g. sugar solutions, polymers, resins,
bitumen, paper industry etc. Chosen as standard for food applications.
Application temperature: -50°C to +250°C
Chemical resistance:
pH 1 – 13
CC
Graphite fibres; dry running; high temperature.
Woven shaft packing consisting of pure graphite fibres without impregnation. Low coefficient of
friction and good dry running properties. Used as wear resistant packing at high temperature.
Application temperature: -60°C to +500°C
Chemical resistance:
pH 0 – 14
3.16.3 Mechanical seals
3.16.3.1 Mechanical seals according to EN12756 (DIN24960) – General information
In TopGear TG H version GS, short type KU or long type NU mechanical seals can be built in.
In the smallest pump sizes H2-32 and H3-32 only the short type KU can be built in.
In the double seal versions GG and GD only the short type KU can be built in. A double
mechanical seal consist of two separately chosen single mechanical seals.
If GD type back-to-back double mechanical seal is chosen, attention must be paid for axial
securing of the first stationary seat. Our pumps are provided for built in the axial securing of the
stationary seat according to EN12756 (DIN24960). The exact securing ring must be delivered by
the mechanical seal manufacturer together with the seals because the dimensions must be adapted
to the form of the seat.
TG H pump size
2-32
3-32
6-40
15-50
23-65
58-80 86-100 185-125 360-150
Shaft diameter 16 22 32 40 45 55 65
Short EN12756
(DIN 24960)
KU016 KU022 KU032 KU040 KU045 KU055 KU065
L-1K (short KU) 35 37.5 42.5 45 45 47.5 52.5
Long EN12756
(DIN 24960)
– NU022 NU032 NU040 NU045 NU055 NU065
L-1N (long NU) – 45 55 55 60 70 80
Dimensions in mm