Scenic® Mechanical Seal Selection Guideline0 pages

SCENIC MECHANICAL SEAL SELECTION GUIDELINES
Type
Arrangement
Design
Standard
Special Technology
Operating Limits
Pressure
Temperature
O
Speed
VOC
Isolated
Springs Controllable
Size Standard
Inch
Main Functions
Std.
Big/
Taper
Metric Cust.
(mm) Design
Accessories
Applications
Remarks
˙General industrial applications: chemical & water pumps; small to large horizontal, vertical, and vacuum
pumps.˙Special processes which are highly acidic, alkaline, corrosive, and abrasive.
˙Widely used in renewable energy industries such as alcohol, bio-diesel, and corn processing.
Requires Plan 21 if temperature is80 C
for water.
˙Chemical & water pumps; Horizontal, vertical, and large pumps.
˙Processes with high temperature. ˙To apply with Plan 21/23.
Throat bushings are required inside the
seal chamber.
˙Rotating equipments with severe shaft end-play or vibration such as pumps, chemical process pumps,
and sewage pumps etc.
˙Processes with low impurity, high viscosity, prone to crystallizing & clogging,and high temperature.
When the operating temperature is
O
O
100 C (212 F ), use perfluoroelastomer
o-rings for secondary seal.
DIN/ANSI/ISO
Vac.~ 22.6 bar
( 327 psig )
-40 ~ 230 C
( -40 ~ 446 OF)
5000 fpm
( 25 m/s )
Multi-function/
High temp.
_
Single
DIN/ANSI
22.6 bar
( 327 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
5000 fpm
( 25 m/s )
High temp.
WCHE
EZ-46
Single
DIN/ANSI/ISO
11.8 bar
( 170.7psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
5000 fpm
( 25 m/s )
Light solids/
High temp.
_
LD 368
Dual/
Face-to-face
DIN/ANSI/ISO
24.5 bar
( 355.6 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
High temp.
SP-3GL ˙Rotating equipments with minimal vibration and without shaft run-out.˙Applicable to Plan 52/53.
LD 388
Dual/Tandem
DIN/ANSI/ISO
API 682 3CW-FB
24.5 bar
( 355.6 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
5000 fpm
( 25 m/s )
5000 fpm
( 25 m/s )
High press./
High temp.
SP-3GL ˙Chemical and large industrial pumps.˙Processes with highly dangerous conditions such as acidic,
alkaline, corrosive, volatile, toxic, and VOC intolerance.˙Applicable to Plan 52/53/54.
SP-5GL
LD 389
Dual/Tandem
DIN/ANSI/ISO
API 682 3CW-FB
24.5 bar
( 355.6 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
5000 fpm
( 25 m/s )
High press. /
High temp.
SP-3GL ˙The extended length of LD389 for the seal chamber is shorter than that of LD388; Ideal for seal chamber
SP-5GL
with limited space.˙Applicable to Plan 52/53/54.
CARLIFE 299
Dual/
Back to back
DIN/ANSI
5000 fpm
( 25 m/s )
High temp.
SP-3GL ˙Processes with VOC intolerance and high temperature.˙Applicable to Plan 52.
CARLIFE 399
Dual/Tandem
DIN/ANSI
API 682 3CW-FB
24.5 bar
( 355.6 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
7000 fpm
( 35 m/s )
High press./
High temp.
SP-3GL ˙Process fluids with high pressure and highly dangerous conditions such as toxic, corrosive, and volatile
SP-5GL
etc; Prevents VOC leakage effectively.˙Applicable to Plan 52/53/54
CARLIFE 399Q
API 682 Cartridge Seals
Single
CARLIFE 99PR
DIN/ANSI Cartridge Seals
CARLIFE 99
Dual/Tandem
DIN/ANSI
API 682 3CW-FB
24.5 bar
( 355.6 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
7000 fpm
( 35 m/s )
Clean seal / High
press./ High temp.
SP-3GL ˙Connected with external steam to foil and remove building up of solid particles accumulated beneath the
SP-5GL
seal faces.˙Applicable to Plan 52/53/54.
49.1 bar
( 712 psig )
49.1 bar
( 712 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
29.4 bar
( 427 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
29.4 bar
( 427 psig )
-40 ~ 230 C
( -40 ~ 446 OF )
APD 302T
Dual/
Back to back
API 682 Type A
1CW-FX
API 682 Type A
2CW-CW/3CW-FB
API 682 Type A
3CW-BB
API 682 Type A
2CW-CW/3CW-BB
APD 302SD/TSD
Dual/
Back to back
API 682 Type A
2CW-CW/3CW-BB
29.4 bar
( 427 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
DIN/ANSI/API 682
Type B, 1CW-FX
API 682 Type C
1CW-FX
API 682 Type B
2CW-CW
API 682 Type C
2CW-CW
29.4 bar
( 427 psig )
44.1 bar
( 640 psig )
-60 ~ 230 OC
( -76 ~ 446 OF )
-75 ~ 426 OC
( -103 ~ 799 OF )
44.1 bar
( 640 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
44.1 bar
( 640 psig )
-40 ~ 426 OC
( -40 ~ 799 OF )
APD 155
Single
APD 355
Dual/Tandem
APD 302
Dual/
Back to back
CAR MB5
Metal Bellow Seals
Vac.~24.5 bar -40 ~ 230 OC
( 355.6 psig ) ( -40 ~ 446 OF )
Single
CAR 600
Single
-40 ~ 230 OC
( -40 ~ 446 OF )
5000 fpm
( 25 m/s )
O
High press. /
High temp.
High press. /
High temp.
High press./ High
temp./ Light solids
High press./ High
temp./ Light solids
High Temp./High
press./ Medium
solids
High press. /
High temp.
High press. /
High temp.
High press. /
High temp.
High press. /
High temp.
˙Processes with normal condition.˙Processes that will not produce impurity and crystalline.
˙Features, design structures, and applications are similar to LD388.
˙Chemical and large industrial pumps, mixers, and agitators etc.
˙Features, design structures, and applications are similar to LD399.
WCHE
SP-3GL
SP-5GL
SP-3GL
SP-5GL
SP-3GL
SP-5GL
Engineered seal design if operating
pressure is24.5 bar.
˙Mainly used in high pressure and VOC intolerance process pumps.˙Applicable to Plan 52/53/54.
˙Meets API682 specifications. Distinctively for chemical and fuel pumps used refinery industry.
Engineered seal design if operating
pressure is24.5 bar.
˙Large and heavy oil process pumps for refinery industries.˙Application to Plan 52/53/54.
˙Process fluid with low solid particle content, prone to crystallization, and VOC intolerance.
Apply Plan 53 for pressurization.
˙Large and heavy oil process pumps for refinery industries.˙Application to Plan 52/53/54.
˙Process fluid with low solid particle content, prone to crystallization, and VOC intolerance.
Apply Plan 53 for pressurization.
˙Process fluids with medium solid particles content, prone to crystallization, and VOC intolerance.
SP-3GL ˙Large and heavy oil process pumps for refinery industries.
SP-5GL ˙Application to Plan 52/53/54.˙Max. Particle Size:6000 micron; Max. Solid by Weight: 20%.
˙Processes with lower specific gravity, low impurity particle content, and minor problem with crystallization. Switch to double-ply bellows design when
the operating pressure is14.7 bar.
˙Specifically designed for high temperature processes.˙Also applicable to Plan 21/23.
WCHE
˙Processes with lower specific gravity, low impurity particle content, and minor problem with crystallization. Switch to double-ply bellows design when
the operating pressure is14.7 bar.
˙Specifically designed for high temperature processes.˙Applicable to Plan 21/23.
˙Processes with lower specific gravity, low impurity particle content, and slight problem with crystallization.
˙Specifically designed for high temperature processes.˙Applicable to Plan 52.
Switch to double-ply bellows design when
the operating pressure is14.7 bar.
˙Processes with lower specific gravity, low impurity particle content, and slight problem with crystallization.
˙Specifically designed for high temperature processes such as kerosene.˙Applicable to Plan 52.
Switch to double-ply bellows design when
the operating pressure is14.7 bar.
SP-3GL
˙Processes with lower specific gravity, low impurity particle content, slight problem with crystallization, and
prone to vaporization with occasional vibration such as styrene (SM). ˙Applicable to Plan 52.
Only use metal bellows design for internal
seal. Switch to double-ply bellows design
when the pressure is14.7 bar.
High press. /
High temp.
SP-3GL
SP-5GL
˙Processes with lower specific gravity, low impurity particle content, slight problem with crystallization, and
prone to vaporization with occasional vibration in light hydrocarbon services such as olefin, ethylene,
butadiene (BD) and butane.˙Applicable to Plan 52.
Only use metal bellows design for internal
seal. Switch to double-ply bellows design
when the pressure is14.7 bar.
Medium solids
_
˙Processes with medium solid particle content such as slurry, impurity, crystalline, fiber, and etc.˙Max.
Particle Size6000 micron; Max. Solid by Weight: 40%.˙FGD desulphurization process of power plants.
_
˙Features, design structures, and applications are similar to CARLIFE 99SS.˙Processes with low
temperature, medium particle content, and environment prone to icing or crystallizing, require external
steam to clean or insulate the mechanical seal.˙Max. Particle Size6000 micron; Max. Solid by Weight: 40%
CARLIFE 99SS is equipped with Quench
and Drain Ports.
ALD
˙Features, design structures, and application are similar to CARLIFE 99SSQ.˙Processes require cooling
or insulating; Can act as low pressure dual cartridge seal; and may operate as dry running seal.
˙Max.Particle Size6000 micron; Max. Solid by Weight: 40%
CARLIFE 99SS is equipped with Quench
and Drain Ports.
˙Features, design structures, and applications are similar to CARLIFE 99SS.˙Processes with heavy solid
particle content such as slurry, impurity, crystalline, fiber, and etc.˙Max. Particle Size:10000 micron; Max.
Solid by Weight: 60%.˙Applicable to Plan 52.
Engineered seal design if Plan 53/54 is
adopted.
SP-3GL
SP-5GL
SP-3GL
SP-5GL
APBG
Dual/Tandem
BL 138
Dual/Tandem
DIN/ANSI
29.4 bar
( 427 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
High press. /
High temp.
Dual/Tandem
DIN/ANSI/API 682
Type B, 2CW-CW
44.1 bar
( 640 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
CARLIFE 99SS
Single
DIN/ANSI
17.7 bar
( 256 psig )
-40 ~ 180 OC
( -40 ~ 356 OF)
CARLIFE 99SSQ
Single
DIN/ANSI
17.7 bar
( 256 psig )
-40 ~ 180 OC
( -40 ~ 356 OF)
CARLIFE 99SSQD
Single
DIN/ANSI
17.7 bar
( 256 psig )
-40 ~ 135 OC
( -40 ~ 275 OF )
CARLIFE 399SS
Dual/Tandem
DIN/ANSI
17.7 bar
( 256 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
CARLIFE 399SSQ
Dual/Tandem
DIN/ANSI
17.7 bar
( 256 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
Heavy solids/High
temp./Clean seal
SP-3GL ˙Processes with heavy particle content; Require external steam connection to clean the seal faces.
LD 388S
Slurry Seals
Apply Plan 53 for pressurization.
WCHE
BT 155
Gas Seals
CARLIFE 399 is equipped with Quench
Port.
˙When the operating temperature is higher than 100OC, use Plan 21.
˙High pressure and VOC intolerance process pumps. Meets API682 specifications.
Dual/Tandem
Dual/Tandem
DIN/ANSI/ISO/
API 682 3CW-FB
24.5 bar
( 355.6 psig )
-40 ~ 230 OC
( -40 ~ 446 OF )
High press./High
temp./ Medium
solids
SP-3GL ˙Max. Particle Size:10000 micron; Max. Solid by Weight: 60%.˙Applicable to Plan 52/53.
SP-5GL ˙Features, design structures, and applications are similar to LD 388.
GS 300
Single
DIN/ANSI/
ISO/API 682
19.7 bar
( 285 psig )
-40 ~ 250 OC
( -40 ~ 482 OF )
High speed / High
temp./ Dry Running
DIN/ANSI/ISO/
API 682 3NC-BB
19.7 bar
( 285 psig )
-40 ~ 250 OC
( -40 ~ 482 OF )
High speed / High
temp./Dry Running
Dual/
Back to back
LD389 is the advance version of LD388.
At the same time, their components are
interchangeable with the CARLIFE Family's parts.
˙Rotating equipments like mixers with shaft end-play and run-out problem.
APB
GS 2300
O
5000 fpm
( 25 m/s )
Medium solids/
Clean seal/Const.
temp.
Dry Running/Const.
temp./ Medium solids
/ Lubrication/Cooling
5000 fpm
( 25 m/s )
10000 fpm
( 50 m/s )
Heavy solids/
High temp.
SP-3GL
˙Features, design structures, and applications are similar to CARLIFE 399SS.
˙Max. Particle Size:10000 micron; Max. Solid by Weight: 60%.˙Applicable to Plan 52.
Engineered seal design if Plan 53/54 is
adopted. CARLIFE 399SS is equipped
with Quench Port.
˙Processes with medium solid particle content such as slurry, impurity, crystalline, fiber, and etc.
Require additional special design if Plan
53 is adopted. Engineered seal design,
if Plan 53 is adopted.
GSP
˙High purity process fluids with dry running requirement, without solid particle and VOC condition such as
food, pharmaceutical, fermentation, pure chemical, and etc.
˙Rotating equipments such as compressors, blowers, mixers, reactor tanks, and etc.
Operating pressures are: 19.6bar (284.5
psig) for internally mounted seal, and 0.9
bar (14.2psig) for externally mounted seal.
GSP
˙Rotating equipments such as compressors, blowers, mixers, reactor tanks, and etc.
˙High purity process fluids with dry running requirement, volatile, without solid particle, and with VOC
condition such as food, pharmaceutical, fermentation, pure chemical, and etc.˙Applicable to Plan 74.
Barrier gas pressure must be 2~4 bar
(29~58 psig) greater than the operating
pressure.
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