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TB687 Mechanical Seal replace John Crane 680

TB687 Mechanical Seal replace John Crane 680
TB687 Mechanical Seal replace John Crane 680TB687 Mechanical Seal replace John Crane 680TB687 Mechanical Seal replace John Crane 680TB687 Mechanical Seal replace John Crane 680

TB687 Mechanical Seal replace John Crane 680

CategoriesComponent Seals
BrandTOPBON
ModelTB687
Temperature-75℃-200℃
Speed≦23m/s
Pressure≦2.1MPA
Stationary SeatTBG9
Rotary Ring MaterialCAR/SIC/TC
Stationary Ring MaterialCER/SIC/TC
O-Ring MaterialVIT, Encasulated Ring, EPDM
Spring & Metal PartsSUS304/SUS316
ApplicationClean Water,Sewage Water,Oil
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Update Time2021-09-17
Detail Information
TB687 mechanical seal
Replacement to:
John Crane 680

Operational Conditions:
Temperature: -75℃ to +200℃
Pressure: ≤2.1MPa
Speed: ≤23m/s

Materials:
Stationary Ring: Silicon Carbide, TC, Cer
Rotary Ring: Silicon Carbide, Car, TC
Secondary Seal: Expanded Graphite, VIT, EPDM
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
Product Number
Size/
Metric
d
D3
D2
D1
d1
L1
L2
L3
L5
M
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
6
M5
14
14
25
21
25
3
25
10
17.5
5
M5
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