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Mechanical Seal TB688 replace John Crane 609

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Mechanical Seal TB688 replace John Crane 609
Mechanical Seal TB688 replace John Crane 609Mechanical Seal TB688 replace John Crane 609Mechanical Seal TB688 replace John Crane 609Mechanical Seal TB688 replace John Crane 609

Mechanical Seal TB688 replace John Crane 609

CategoriesMetal Bellow Mechanical Seal
BrandTOPBON Mechanical Seal Manufacturer
ModelTB688
Temperature-75℃-370℃
Speed≦23m/s
Pressure≦2.1MPA
Stationary SeatTBG9
Rotary Ring MaterialCAR/SIC/TC
Stationary Ring MaterialCER/SIC/TC
O-Ring MaterialEncasulated Ring, Expanded Graphite
Spring & Metal PartsSUS304/SUS316
ApplicationClean Water，Sewage Water，Oil
Update TimeFeb 23,2025
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Detail Information
Product Introduction 
Product Size
Product Details
Product Model
Mechanical seal TB688 
Replacement to:
John Crane 609

Operational Conditions:
Temperature: -75℃ to +370℃
Pressure: ≤2.1MPa
Speed: ≤23m/s

Materials:
Stationary Ring: Silicon Carbide, TC, Cer
Rotary Ring: Silicon Carbide, Car, TC
Secondary Seal: Expanded Graphite, Encasulated Ring
Spring and Metal Parts: SUS304,SUS316 
Applications:
Clean water,
sewage water
oil and other moderately corrosive fluids
Stationary Seat:
Standard: TBG9
Alternative:
Product details
SIZE
Size/
Metric
d
D3
L1
25.40
25.40
41.28
38.95
28.58
28.58
44.45
39.87
31.75
31.75
47.63
40.66
34.93
34.93
50.80
40.66
38.10
38.10
53.98
40.66
41.28
41.28
57.15
40.66
44.45
44.45
60.33
41.48
47.63
47.63
63.50
41.48
50.80
50.80
66.68
42.26
53.98
53.98
69.85
42.26
57.15
57.15
73.03
43.86
60.33
60.33
76.20
43.86
63.50
63.50
82.55
44.65
66.68
66.68
85.73
45.44
69.85
69.85
88.90
45.44
73.03
73.03
93.65
47.83
76.20
76.20
96.82
47.83
79.38
79.38
101.60
47.83
82.55
82.55
104.78
47.83
85.73
85.73
107.95
47.83
88.90
88.90
111.13
47.83
92.08
92.08
114.30
47.83
95.25
95.25
117.48
47.83
98.43
98.43
120.65
47.83
101.60
101.60
123.83
47.83
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