Reliable Supplier Mechanical Pump Seal - 687 Metal Bellow Mechanical Seal for John Crane 680 – Xindeng
Reliable Supplier Mechanical Pump Seal - 687 Metal Bellow Mechanical Seal for John Crane 680 – Xindeng Detail:
Description:
687 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
d(inch) | D3 | L1 |
0.750 | 1.312 | 1.250 |
0.875 | 1.437 | 1.250 |
0.937 | 1.500 | 1.250 |
1.000 | 1.562 | 1.250 |
1.125 | 1.687 | 1.250 |
1.250 | 1.812 | 1.312 |
1.375 | 1.937 | 1.437 |
1.500 | 2.063 | 1.437 |
1.625 | 2.187 | 1.437 |
1.750 | 2.312 | 1.437 |
1.875 | 2.437 | 1.500 |
2.000 | 2.562 | 1.500 |
2.125 | 2.687 | 1.500 |
2.250 | 2.812 | 1.562 |
2.375 | 2.937 | 1.562 |
2.500 | 3.187 | 1.562 |
2.625 | 3.312 | 1.625 |
2.750 | 3.437 | 1.625 |
2.875 | 3.625 | 1.687 |
3.000 | 3.750 | 1.687 |
3.125 | 3.875 | 1.750 |
3.250 | 4.000 | 1.750 |
3.375 | 4.125 | 1.750 |
3.500 | 4.250 | 1.875 |
3.625 | 4.375 | 1.875 |
3.750 | 4.500 | 1.875 |
3.880 | 4.625 | 1.875 |
4.000 | 4.750 | 1.875 |
d(mm) | D3 | L1 |
18 | 32 | 27.7 |
20 | 33.3 | 27.7 |
22 | 36 | 27.7 |
24 | 38.1 | 30.2 |
25 | 39 | 30.2 |
28 | 42 | 32.7 |
30 | 44 | 32.7 |
32 | 46 | 32.7 |
33 | 47 | 32.7 |
35 | 49.2 | 32.7 |
38 | 52.4 | 34.2 |
40 | 55.6 | 34.2 |
43 | 58.7 | 34.2 |
45 | 58.7 | 34.2 |
48 | 61.9 | 34.2 |
50 | 65.1 | 34.7 |
53 | 68.3 | 34.7 |
55 | 71 | 34.7 |
60 | 74.6 | 39.7 |
65 | 84.1 | 39.7 |
70 | 87.3 | 45.2 |
75 | 95.3 | 45.2 |
80 | 98.4 | 44.7 |
85 | 104.8 | 44.7 |
90 | 108 | 49.7 |
95 | 114.3 | 49.7 |
Product detail pictures:


Related Product Guide:
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