Sanitary pumps

Shaft seals
Sanitary pumps
Example HILGE 3A2 001 19 a e E O 1
Mechanical seal hygienic standard
3A1
3AH
3A2
Spring design
3A0.01 - CrNiMo steel/AISI 300 series 1 Bidirectional
3A1.02 - CrNiMo steel/AISI 300 series (Ra ≤ 3.2 µm) 2 Direction of rotation, left
3A0.01 - CrNiMo steel/AISI 300 series 3 Direction of rotation, right
3A0.H1 - Hastelloy ® 4 Vacuum spring, left
3A1.02 - CrNiMo steel/AISI 300 series (Ra ≤ 3.2 µm) 5 Vacuum spring, right
3A1.04 - 1.4435/AISI 316L (Fe ≤ 3 %, Ra ≤ 3.2 µm) 6 Enclosed spring, left
3A2.03 - 1.4404/1.4435/AISI 316L (Ra ≤ 0.8 µm) 7 Enclosed spring, right
3A2.05 - 1.4435/AISI 316L (Fe ≤ 1 %, Ra ≤ 0.8 µm) 0 No additional information necessary
3A2.33 - 1.4404/1.4435/AISI 316L (Fe ≤ 3 %, Ra ≤ 0.8 µm) Seal design
3A3.06 - 1.4435/AISI 316L (Fe ≤ 1 %, Ra ≤ 0.4 µm) A Stationary ring, with twist protection
3A3 3A3.07 - 1.4404/1.4435/AISI 316L (Ra ≤ 0.4 µm) B Stationary ring, double elastic supported
3A3.37 - 1.4404/1.4435/AISI 316L (Fe ≤ 3 %, Ra ≤ 0.4 µm)
Out of Hilge standard (3A3 / V-gap und
Seat for stationary ring
C grooves) (L1K always with twist protection) (for
WFI only)
001 Mechanical seal seat 1 D Standard dimension N
002 Mechanical seal seat 2 E Standard dimension N, with twist protection
003 Mechanical seal seat 3 F Standard dimension K
07K
BS2
Mechanical seal seat 1 with adjustable screw
(durietta 0 back-to-back in contact with liquid)
Mechanical seal seat 3, 0.3 mm (Hygiana/HYGIA ® old)
BS3 Mechanical seal seat 3, 4 mm (Euro-HYGIA ® )
0B1
0B2
Mechanical seal seat B1
(double-elastic supported, bidirectional)
Mechanical seal seat B2
(double-elastic supported, direction of rotation: left)
G
O
T
O-rings
E/H
Standard dimension K, with twist protection
No additional information necessary
O + sensor for monitoring of temperature
(length of sensor 250 mm/ cable 20 m)
EPDM, peroxide-crosslinked (with special
approvals)
G Hypalon ®
K FFKM-FDA (Kalrez ® )
0B3
Mechanical seal seat B3
(double-elastic supported, direction of rotation: right)
J
FFKM (Kalrez ® ), USP Class VI
3A Sanitary Standard 18-03 Class I / FDA
L1K Standard seal length L1K P NBR (Perbunan ® )
L1N Standard seal length L1N S Silicone
XXX Special seat T PTFE (Teflon ® )
Shaft diameter at position of stationary ring [mm] V FKM-FDA (Viton ® )
Material, stationary ring
FKM (Viton
I
) USP Class VI
a Carbon graphite, synthetic resin impregnated
3A Sanitary Standard 18-03 Class I / FDA
b Tungsten carbide, shrunk Y No O-rings mounted
c Ceramic Material, rotary ring
d PTFE, glass-fibre reinforced a Carbon graphite, synthetic resin-impregnated
e Stainless steel b Tungsten carbide, shrunk
f Carbon graphite, antimony impregnated c Ceramic
g Tungsten carbide, soldered d PTFE, glass-fibre reinforced
h Tungsten carbide, solid e Stainless steel
i Silicon carbide, shrunk f Carbon graphite, antimony impregnated
k Silicon carbide, solid g Tungsten carbide, soldered
m Silicon carbide, solid, Buka27-02 h Tungsten carbide, solid
n EKasic ® -PG15, solid i Silicon carbide, shrunk
o Silicon carbide, solid, Buka22-10 k Silicon carbide, solid
s Silicon carbide, shrunk, special m Silicon carbide, solid, Buka27-02
n EKasic ® -PG15, solid
o Silicon carbide, solid, Buka22-10
s Silicon carbide, shrunk, special
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