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SS-Type 680: John crane Type 680 replacement

Description:
SS-Type 680: Metal bellows seal, Replacement of John crane Type 680

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SS-680
Structure Description:
Equivalent to John crane Type 680
Operating Limits:
Temperature: -75° C to +290° C/-100° F to +550° F
Speed: Up to 25mps / 5, 000 FPM
Pressure: Vacuum to 25 barg/360 psig
Standard size: 18-115mm/0.75''-5.25''
Material:
Bellows: SS-680 Alloy 20 (UNS N08020)
End-Fittings: SS-680 Alloy 20
Insert/Primary Ring: Premium Carbon Grade; Tungsten Carbide, Silicon Carbide;
Static Seals: Fluorocarbon, EPR, PTFE- Encapsulated Fluorocarbon, Nitrile, Perfluoroelastomer

SS-680 Dimentions(mm)
A B C
18 32.0 27.5
20 33.3 27.5
22 36.0 27.5
24 38.1 30.0
25 39.0 30.0
28 42.0 32.5
30 44.0 32.5
32 46.0 32.5
33 47.0 32.5
35 49.2 32.5
38 52.4 34.0
40 55.6 34.0
43 58.7 34.0
45 58.7 34.0
48 61.9 34.0
50 65.1 34.5
53 68.3 34.5
55 71.0 34.5
60 74.6 39.5
65 84.1 39.5
70 87.3 45.0
75 95.3 45.0
80 98.4 44.5
85 104.8 44.5
90 108.0 49.5
95 114.3 49.5
100 120.7 49.5
105 131.7 48.3
110 138.1 48.3
115 144.5 48.3

SS-680 Dimentions(mm)
A B C
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 2.062 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
3.875 4.625 1.875
4.000 4.750 1.875
4.250 5.187 1.903
4.500 5.438 1.903
4.750 5.688 1.903
5.000 5.938 1.903
5.250 6.213 1.903

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