Material and shaft seal selection

Depending on 「 the properties of the liquid 」 to be transferred, 「 the material of the wetted part 」 and 「 the shaft sealing method 」 are selected as 「 optimum one 」 on the following table.

1 MONAS K-Series - Material & Sealing Code

No. Description Code Construction / Materials
1 CASING G GC200
S STS304
S6 STS316L
SD SUPER DUPLEX
X SPECIAL (HASTELLOY-C. ETC)
2 ROTOR D STD11(Alloy Tool Steel) + Q/T(Heat treatment)
S STS304
4H STS304 + HCr (Hard Chrome Plated)
S6 STS316L
6H STS316L + HCr (Hard Chrome Plated)
SD SUPER DUPLEX
X SPECIAL (HASTELLOY-C. ETC)
3 STATOR N NBR (ACRYLONITRILS BUTADIENE RUBBER)
E EPDM (ETYLENE PROPYLENE DIENE RUBBER)
H HNBR (HYDROGENATED NITRILE RUBBER)
V FKM (VITON)
T PTFE (TEFLON)
W FOOD GRADE NBR (WHITE COLOR)
WE FOOD GRADE EPDM (WHITE COLOR)
X SPECIAL
4 SHAFT
SEALING		 G GLAND PACKING
GF GLAND PACKING - FLUSHING
M MECHANICAL SEAL
MF MECHANICAL SEAL - FLUSHING
DM DOUBLE MECHANICAL SEAL
X SPECIAL

2 MONAS K-Series - Material & Sealing Code Numbering

Code Example

1

G

CASING
GC200

2

D

ROTOR
STD11+Q/T

3

N

STATOR
NBR

4

GF

SEALING TYPE
GLAND PACKING - FLUSHING

Example of wetted part materials and shaft sealing device of pumps in water treatment plant

Application Type Material Shaft Seal
Sludge KA Basic Type
  • Casing : Cast Iron (GC200)
  • Rotor : Tool Steel((STD11)+Heat Treatment(Q/T)
  • Stator : NBR
  • Flushing Type Mechanical Seal
  • Oil-filled Mechanical Seal
  • Single Mechanical Seal
Dehydrated Cake KC Dehydrated Cake Type
  • Casing : STS304
  • Rotor : Tool Steel((STD11)+Heat Treatment(Q/T)
  • Stator : NBR
Lime water KA Basic Type
  • Casing : Cast Iron (GC200)
  • Rotor : Tool Steel((STD11)+Heat Treatment(Q/T)
  • Stator : NBR
  • Single Mechanical Seal
Polymer KA Basic Type
  • Casing : Cast Iron (GC200) or STS304
  • Rotor : STS304, STS316L
  • Stator : NBR, EPDM