Code For Shaft Seal - Grundfos MTR 15 Service Instructions Manual

1.3 Code for shaft seal

The code for shaft seal always consists of four letters.
Example
Principal Grundfos type designation for
shaft seal
Material, rotating seal face
Material, stationary seat
Material, secondary seal
The following codes are used:
Position Code
A O-ring seal with fixed driver
B Rubber bellows seal
C O-ring seal with spring as seal driver
D O-ring seal, balanced
E Cartridge seal with O-ring
F Cartridge seal with rubber bellows
1 H Balanced cartridge seal with O-ring
K Type M as cartridge seal
M Shaft seal with metal bellows
O Double seal, back-to-back
P Double seal, tandem
R O-ring seal, type A, with reduced sliding surfaces
X Special version
B Carbon, synthetic resin-impregnated
C Other types of carbon
S Chromium steel
2
H Cemented tungsten carbide, embedded (hybrid)
and
U Cemented tungsten carbide
3
Q Silicon carbide
V Aluminium oxide
X Other ceramics
E EPDM
F FXM
P NBR (nitrile rubber)
4
T PFTE
V FKM
K FFKM
H U U
1
2
3
4
Description
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