TB687 Metal Bellow Mechanical Seal for John Crane 680

Description:

TB687  Mechanical Seal

For big compressors and industrial pumps

Replacing the mechanical seal of John Crane 680

Operational Conditions:

Temperature: -75℃ to +200℃

Pressure: ≤2.0MPa

Speed: ≤23m/s

Materials:

Stationary Ring：TC, Silicon Carbide

Rotary Ring：Carbon ,Silicon Carbide,TC

Secondary Seal：NBR,EPDM,Viton

Bellows：Steel

Spring and Metal Parts：Steel

Applications:

Oil, 

light hydrocarbon, 

aromatic Hydrocarbon, 

organic solvents,

week acids, 

ammonia

Size:

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