Low Temperature, General Duty Alloy-20 Metal Bellows Shaft Seal as John Crane 680 type

Model: CR687
Place of Origin: Zhejiang,China (Mainland)
Standard or Nonstandard: Standard
Style: Mechanical Seal
Material: Metal
Brand Name: John Crane 680
Stationary Ring:: U2,Q2
Rotary Ring:: B.Q2.U2
Secondary Seal:: V.E.P
Bellows:: T6
Spring and Metal parts:: F.G.M

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Product Description

Payment & Shipping Terms Supply Capacity
Trade Term:FOBProduction Capacity:800-1200sets/month
Payment Terms:L/C, T/T, WUPacking:carton standard...
Min. Order:5 Set/SetsDelivery Date:have ex-stock
Means of Transport:by express, Ocean, Air

Metal Bellow Seal John Cran 680
Features

Leader in Bellows Sealing Technology

Sealol Low-Temperature and High-Temperature bellows seals assure low emissions and optimized Mean-Time-Between-Planned-Maintenance (MTBPM).
Superior Bellows Design
These seals are manufactured with a 45º tilt edge at the bellows inside diameter to disperse stresses and maximize operating life.

Superior Plate Shape
The plate shape used by John Crane Sealol is called a nesting ripple. With a three-sweep radius, this plate design allows the bellows device to be flexed repeatedly without the metal being stressed beyond its endurance limit.

Self-Cleaning Design
Rotating bellows throw off suspended particles that clog spring-type seals. This self-cleaning action eliminates the need for external flushing, filters or cyclone separators and their associated costs.

World-class Bellows Manufacture
Our bellows production facility has an outstanding manufacturing process with state-of-the-art stamping,welding and testing technology.

Application Flexibility
A wide range of metallurgies, face combinations and packing materials are used to seal a variety of demanding applications.

Advanced Research and Development
The Sealol bellows incorporate all of the design features resulting from key engineering competencies, such as metallic thin shell methodology, tribology and fluid sealing technology, and thin film/fluid mechanics.

Operational conditions:

Materials

temperature

-75℃ to +200℃

Stationary ring

U2,Q2

Pressure

<<2.0mpa< div="">

Rotary ring

B,Q2,U2

Speed

<<23m/s

Secondary seal

V,E,P

Bellow

T6

Spring and metal parts

F,G,M

Application: Oil,light hydrocarbon,aromatic Hydrocarbon,organic solvents,weakacids,ammonia etc


Low Temperature, General Duty Alloy-20 Metal Bellows Shaft Seal as John Crane 680 typeLow Temperature, General Duty Alloy-20 Metal Bellows Shaft Seal as John Crane 680 type

SIZE

d

D3

L1

SIZE

d

D3

L1

0.750

0.750

1.312

1.250

18

18

32.00

27.7

0.875

0.875

1.437

1.250

20

20

33.30

27.7

0.937

0.937

1.500

1.250

22

22

36.00

27.7

1.000

1.000

1.562

1.250

24

24

38.10

30.2

1.125

1.125

1.687

1.250

25

25

39.00

30.2

1.250

1.250

1.812

1.312

28

28

42.00

32.7

1.375

1.375

1.937

1.437

30

30

44.00

32.7

1.500

1.500

2.063

1.437

32

32

46.00

32.7

1.625

1.625

2.187

1.437

33

33

47.00

32.7

1.750

1.750

2.312

1.437

35

35

49.20

32.7

1.875

1.875

2.437

1.500

38

38

52.40

34.2

2.000

2.000

2.562

1.500

40

40

55.60

34.2

2.125

2.125

2.687

1.500

43

43

58.70

34.2

2.250

2.250

2.812

1.562

45

45

58.70

34.2

2.375

2.375

2.937

1.562

48

48

61.90

34.2

2.500

2.500

3.187

1.562

50

50

65.10

34.7

2.625

2.625

3.312

1.625

53

53

68.30

34.7

2.750

2.750

3.437

1.625

55

55

71.00

34.7

2.875

2.875

3.625

1.687

60

60

74.60

39.7

3.000

3.000

3.750

1.687

65

65

84.10

39.7

3.125

3.125

3.875

1.750

70

70

87.30

45.2

3.250

3.250

4.000

1.750

75

75

95.30

45.2

3.375

3.375

4.125

1.750

80

80

98.40

44.7

3.500

3.500

4.250

1.875

85

85

104.80

44.7

3.625

3.625

4.375

1.875

90

90

108.00

49.7

3.750

3.750

4.500

1.875

95

95

114.30

49.7

3.880

3.880

4.625

1.875

/

/

/

/

4.000

4.000

4.750

1.875

/

/

/

/



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