Mechanical Seals for ABS Pumps
SE Seal Identification Codes Mechanical Seals for ABS Pumps
E.g. SE2C-70-QRMG-304568
XXX-XX-X1-X2-X3-X4-XXXXXX
1 2 3 4
1 Type of seal SE1; single seal
SE1F; single seal with flush
SEW; quench seal
SE2C; double seal, cartridge
2 Shaft diameter; (mm, in)
3 Material codes
X1 X2 X3 X4
Q-SiC/SiC R-AISI 316/329 M-PTFE O-single seal
G-SiC/carbon T-titanium E-EPDM G-SiC/carbon
T-TC/TC U-UHB 904 L V-Viton® V-V-ring (quench)
4 Drawing number
Asia Pacific Europe, Africa and Asia Latin America North America
Singapore
Tel: 65-222-9161
Slough, UK
Tel: 44-1753-224000
São Paulo, Brazil
Tel: 55-11-3049-9979
Morton Grove, Illinois USA
Tel: 1-847-967-2400
SE1, SE1F, SEW and SE2C
Fax: 65-223-5035 Fax: 44-1753-224224 Fax: 55-11-3849-4511 Fax: 1-847-967-3915
1-800-SEALING
For the nearest John Crane location, please contact one of the locations above.
If the products featured will be used in a potentially dangerous and/or hazardous process, your John Crane representative should be consulted prior to their selection and use.
In the interest of continuous development, John Crane Companies reserve the right to alter designs and specifications without prior notice. It is dangerous to smoke while
handling products made from PTFE. Old and new PTFE products must not be incinerated.
©2001 John Crane Print June 01 www.johncrane.com ISO Certified B-Safeseal/Eng
Safeseal SE1 and SE1F
Flush in
Simple design, good technical solutions SE1 SE1F
Typical applications wear out the O-ring. Spring is not in contact with
Safeseal SE1 is a special seal designed for clean and process liquid. Technical specifications
lubricating fluids such as water, different types of oils, 4. SiC/Carbon a standard option for seal faces Stuffing box pressure max 15 bar (215 psi)
solvents, and stock (consistency up to 2%) and other SiC/Carbon holds up well under high speeds found in, Speed max 20 m/s /65 ft/s)
slurries. SE1F is equipped with flush connection and a for example, condensate pumps and other high Temperature max 120ºC (250ºF)
throttle bushing. These seals are typically used in pumps temperature pumps.
in paper and board mills as well as other slurry services. 5. Installation against the shaft shoulders Materials
Easy installation reduces risk of human error. Seal faces SiC/Carbon or SiC/SiC
The SE1 seal is easy to install and maintain. In spite of O-rings EPDM, PTFE, Viton®
No measurements required for installation.
its simple design, SE1 is very advanced in its technical
6. No drive pins Metal parts Standard material AISI 329
capabilities, including, for example, a patented thermal
method for seal face holding and an elastic thrust ring. Seal faces do not crack at start-up. (Titanium, UHB)
7. Front pull-out design Springs Nimonic steel
Features: Removable from the impeller side.
1. Balanced design 8. Available in different materials
Undisturbed operation even with sudden pressure shocks. Selection covers all possible single seal applications.
2. Heat shrunk seal faces 9. Available as a cartridge seal
Ensures correct face alignment at all temperatures By using an ABS cartridge tool the seal becomes a true
recommended for this seal. cartridge seal.
3. Spring located in the stationary body of the seal
Shaft misalignment does not pump up the spring or
Safeseal SEW SEW Quench
A reliable, long-lasting quench seal for demanding conditions Safeunit™
Typical applications 4. Installation against the shaft shoulders Technical specifications 0 bar
SEW is a seal operating on a non-pressurised water Easy installation reduces risk of human error. Stuffing box pressure max 15 bar (215 psi) 0.5 - 1.5 l/min
rinsing (quench) principle, and it is designed for the No measurements required for installation. Speed max 20 m/s /65 ft/s)
most demanding applications in the paper industry, 5. No drive pins at seals Temperature max 150ºC (300ºF)
where reliable and long-lasting operation is required Seal face does not crack at start-up.
from a seal. Typical applications include stock pumps Materials
6. Available in different materials
at pulp mill washing and screening facilities, as well Selection covers all possible single seal applications. Seal faces SiC/Carbon or SiC/SiC
as high temperature condensate pumps. 7. Front pull-out design O-rings EPDM, PTFE, Viton®
Removable from the impeller side. Metal parts Standard material AISI 329
Features:
8. Non-pressurised seal water rinsing (quench) (Titanium, UHB)
1. Balanced design
Possible to cool seal with non-pressurised seal water at Springs Nimonic steel
Undisturbed operation even with sudden pressure shocks.
high temperatures. V-ring prevents water leakage
2. Heat shrunk seal faces
from the seal.
Ensures correct face alignment at all temperatures
recommended for this seal. 9. Available as a cartridge seal
By using an ABS cartridge tool the seal becomes
3. Spring located in a stationary body
a true cartridge seal.
Shaft misalignment does not pump up the spring or
wear out the O-ring. Spring is not in contact with 10. Available with grease lubrication
process liquid. Safeseal SEW can be used with grease quench to
save seal water.
Safeseal SE2C
SE2C
Double-balanced design, ultimate reliability
Typical applications 3. The piston-type design Technical specifications Safeunit™
The double-balanced design of Safeseal SE2C ensures Enables free axial movement, that does not have any
Stuffing box pressure max 20 bar (290 psi)
reliable and long-lasting operation under the most impact on seal face loading. 2-15 bar
Seal water pressure max 15 bar (215 psi)
demanding conditions. This seal is typically used in 4. PTFE slot rings as standard 0.5 - 3 l/min
Speed max 30 m/s (90 ft/s)
pumps for abrasive and environmentally hazardous Used in positions where they are exposed to the process.
liquids in cooking, evaporation, and causticising facilities The PTFE seal advantage is that it does not jam even in Temperature max 180ºC (350ºF)
in pulp mills. process conditions involving a lot of solid material. Materials
5. No drive pins Seal faces SiC/SiC (product side)
Features
Milled anti-rotation slots prevent rolling of the body SiC/Carbon (atmosphere side)
1. Heat shrunk seal faces. ring that protects the seal face. This eliminates tension O-rings PTFE (product side)
Ensures correct face alignment at all temperatures peaks that would distort or break the seal face.
Alternatives: EPDM, Viton® etc.
recommended for this seal. 6. Special double-balanced design
Metal parts Standard material AISI 329
2. Stationary set of springs Allows the use of both pressurised and non-pressurised
The springs are located in the stationary body of the seal water. (Titanium, UHB)
seal outside of the seal water preventing clogging of Springs Nimonic steel
springs. Shaft misalignment does not pump up springs
or wear out O-rings.
