TB688 Metal Bellow Mechanical Seal for John Crane 609

Group Metal Bellow Mechanical Seals
Min. Order 1 piece
Terms of Payment all
Update Time 2019-03-25
  • Description
  • Product review


TB688  Mechanical Seal

For big compressors and industrial pumps

Replacing the mechanical seal of John Crane 609

Operational Conditions:

Temperature: -75℃ to +400℃

Pressure: ≤2.0MPa

Speed: ≤23m/s


Stationary Ring:TC, Silicon Carbide

Rotary Ring:Carbon ,Silicon Carbide,TC

Secondary Seal:NBR,EPDM,Viton


Spring and Metal Parts:Steel



light hydrocarbon, 

aromatic Hydrocarbon, 

organic solvents,

week acids, 



Product Andvantage Overview:

TOPBON can offer high quality products ata competitive price, thanks to the 10 years of experience. A warehouse of 2,000square meters and 20,000 spare parts ready in stock guarantee a delivery timeof 7 days for standard seals. Moreover, TOPBON can also produce mechanicalseals according to customers’ requests. During the years, TOPBON has producedmore than 100 types of non-standard mechanical seals. 

4 Quality standards of TOPBON Mechanical Seal :

1) Rubber: the surface should be smoothly, neat, rift, bubble and so on .

2) Metal parts : without burr, drape, rust, seal parts without longitudinal patterning.

3) Seal ring : seal ring face’s flatness 0.0006MM , seal ring ‘s surface roughness 0.1μm, seal ring  face without crack, scratch,pore and so on.

4) Spring: the surface should be smoothly, without crack, burr .

Packing & Shipping