Fixed Competitive Price Mechanical Shaft Seals For Pumps - 687 Metal Bellow Mechanical Seal for John Crane 680 – Xindeng

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Fixed Competitive Price Mechanical Shaft Seals For Pumps - 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

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