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Suggested operating limits
Temperature: -20 - 120℃
Speed: ≤10m/s
Pressure≤1.2 Mpa
Combined material
Rotary face: Carbon/Sic/TC
Stat Ring: Ceramic/Sic/TC
Seat Type:Standard AS-S60,Alternative AS-S04/S06/S09.
Features：
For plain shafts
Single and dual seal
Elastomer bellows rotating
Unbalanced
Independent of direction of rotation
No torsion on bellows
Advantages：
Shaft protection over entire seal length
Protection of seal face during installation due to special bellows design
Insensitive to shaft deflections due to large axial movement ability
Universal application opportunities
Suitable for low-end sterile applications
Important material certifications available
High flexibility due to wide provision of materials
Recommended applications：
Process industry
Chemical industry
Pulp and paper industry
Water and waste water technology
Food and beverage industry
Sugar industry
Water, waste water, slurries (up to 5 % by weight)
Pulp (up to 4 % otro)
Latex
Dairies, beverages
Sulfide slurries
Chemicals
Oils
Chemical standard pumps
Helical screw pumps
Stock pumps
Circulating pumps
Submersible pumps
Water and waste water pumps
Oil applications
Allowable value of shaft radial play:
Excessive shaft radial play will cause the jittering or deviation of the shaft,thus increase the seal contact surface, reduce lubricating film, and accelerate wear, which is detrimental to the sealing performance and service life of the mechanical seal. Therefore, JB4 127-85 stipulates：
| Allowable value of radial play of shaft（or sleeve）where mechanical seal is installed | |
| Outdiameter of shaft（or sleeve）（mm） | value of radial play |
| 10-50 | 0.04 |
| 50-120 | 0.06 |
shaft radial play is not only related to shaft diameter, but also related to shaft speed of the mechanical seal.
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