Metal Bellow Seal Replacement for John Crane 680 Mechanical Seal

• Structure: Single End
• Pressure: ≤2.0m/PA
• Speed: ≤20m/S
• Temperature: -20ºC~-200ºC
• Standard: Standard
• Balance: Unbalanced
• Model NO.: SRS-680ME
• Size: 18-100mm
• Rotary Face: Carbon/Sic/Tc
• Stat Ring: Sic/Tc
• Seat Type: Standard SRS-Orsa, Alternative SRS-Rose/S09
• Transport Package: SRS Standrad or Customized
• Trademark: SRS
• Origin: China
• HS Code: 8484200090
• Production Capacity: 50000PCS/Year

Product Description

 

Product Description

 

Combined Material

Rotary Face: Carbon/SIC/TC

Stat Ring: SIC/TC

Seat Type: Standard SRS-ORSA, Alternative SRS-ROSE/S09

This seal can replace with Johncrane type 68.

 

Bellows Design Features: 

1. Optimum 45° tilt angle 

2. Three-sweep radius 

3. Static secondary seal 

4. Light spring loads

 

Welded Metal Bellows Bellows Advantages:

1. Uniform plate rigidity and stress distribution 

2. Enhanced fatigue strength 

3. Pressure-balanced by design 

4. Less heat generated 

5. Lower power consumption 
 

Applications:

1. Aqueous solutions 

2. Chemicals 

3. Hydrocarbons A 

4. Slurry

5. Thermo-sensitive fluids

6. Water

 

Our SRS-BJ80 is the ideal seal for general-purpose applications, Also good for low-temperature applications found in the chemical, water and wastewater, pulp and paper, and utility industries. The seal is available with hard faces for abrasive applications and a wide range of elastomers to cover a broad range of applications.

 

 

SIZE/METRIC	D3	L1		SIZE/INCH	d	D3	L1
d
18	32.0	27.5		0.750	19.05	33.3	31.75
20	33.3	27.5		0.875	22.23	36.5	31.75
22	36.0	27.5		0.937	23.80	38.1	31.75
24	38.1	30		1.000	25.40	39.7	31.75
25	39.0	30		1.125	28.58	42.9	31.75
28	42.0	32.5		1.250	31.75	46.0	33.32
30	44.0	32.5		1.375	34.93	49.2	36.50
32	46.0	32.5		1.500	38.10	52.4	36.50
33	47.0	32.5		1.625	41.28	55.6	36.50
35	49.2	32.5		1.750	44.45	58.7	36.50
38	52.4	34		1.875	47.63	61.9	38.10
40	55.6	34		2.000	50.80	65.1	38.10
43	58.7	34		2.125	53.98	68.3	38.10
45	58.7	34		2.250	57.15	71.4	39.67
48	61.9	34		2.375	60.33	74.6	39.67
50	65.1	34.5		2.500	63.50	80.95	39.67
53	68.3	34.5		2.625	66.68	84.12	41.28
55	71.0	34.5		2.750	69.85	87.3	41.28
60	74.6	39.5		2.875	73.03	92.08	42.85
65	84.1	39.5		3.000	76.20	95.25	42.85
70	87.3	45		3.125	79.38	98.43	44.45
75	95.3	45		3.250	82.55	101.6	44.45
80	98.4	44.5		3.375	85.73	104.78	44.45
85	104.8	44.5		3.500	88.90	107.95	47.63
90	108.0	49.5		3.625	92.08	111.13	47.63
95	114.3	49.5		3.750	95.25	114.3	47.63
100	120.7	49.5		3.875	98.43	117.48	47.63
				4.000	101.60	120.65	47.63

 

 

 

 

 

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