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Mechanical seals with springs in metal case

Mechanical seals with springs in metal case

  $0.00
Description

153 / 153D dual mechanical seal in metal case for chemical pumps by OST 26-06

 

Mechanical seals for chemical pumps of X, XM, and AX types.

Single and double versions.

Secondary PTFE seals ensure high cehmical resistance.

Made as per OST26-06-1493-87.

 

Analog:

Hermetica 153, 153D

Friction couple materials:

carbographite (Рђ, Р’)

special chrome molybdenum steel (Р•)

tungsten carbide (U3)

silicon carbide (Q1, Q2)

ceramics Al203 (V)

 

Secondary seals:

fluorine rubber, FKM (V)

nitrile rubber (Р )

ethylene propylene rubber, EPDM (Р•)

fluoroplastic, PTFE

 

Parameters:

СЂ = 16 (25) bars

t = -50 ... 220°С

v = 20 m/s

d

D3

D6

D7

L1

L2

L3

33

47

42

48

42,5

76

55

40

56

51

58

45

84

55

48

64

59

66

45

86

60

55

71

67

75

47,5

89

70

60

80

72

80

52,5

100

70

70

90

83

92

60

100

80

75

99

88

97

60

100

80

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
153 / 153D Dual mechanical seal in metal case for chemical pumps
pcs.
  $0.00
Description

DIN 24960

 

 

Disadvantages of the central spring design: uneven load distribution along the friction belt in the couple due to the non-perpendicularity of the spring ends in relation to its axis, resulting in the couple being subject to unilateral wear, a comparatively large size of the spring in the axial direction and its inefficiency for large-sized shafts.

Mechanical seals with a set of small cylindrical springs have a smaller axial size than central spring seals and have no limitations as to the shaft diameter. By using a set of small springs, it is possible to increase unification of the Mechanical seal design: one and the same spring can be used for sealing different diameters. The sealing force can be adjusted by changing the number of springs and keeping constant the axial movement of the rigid element. The seal design ensures its low-cost maintenance due to easily replaceable parts.  This kind of seal is often used in pumps at refineries, petrochemical plants and in the process industry. The secondary seal on the axis is completed by means of an O-ring or PTFE ring wedgewise.

The disadvantage of this kind of rigid elements is the small diameter (1 mm) of the spring wire, which makes its application in corrosive media limited.

The rigid element design based on a set of small springs is not recommended for use in media with solid inclusions.
The springs are quickly clogged with solid inclusions, which causes the rigid element to lose its axial movement ability.

The more compact version allows it to be used in pumps for heating, in sludge and fecal pumps, as well as in food industry pumps.

 

Analog:

AESSEAL M03 / M03S, Burgmann BT-C56.KU / BT-C5.KU / M74N, John Crane 59U / 58U, Vulcan 1659 / 1659S, Sterling 259 / 259S, Type 153 / 251 by OST

 

Materials for sealing faces:

carbographite

chromium steel

nickel chrome steel

increased rigidity nickel chrome steel

tungsten carbide

silicon carbide

ceramics (AI2O3)

 

Operating limits:

p = 16 bars

t = -40 ... 220В°C

v = 20 m/s

 

 

NV-1.1 carbographite pressed into the sealing surface frame

 

 

NV-1.2 silicon carbide pressed into the sealing surface frame

 

 

NV-1.3 seal surface with tungsten carbide soldered on

 

d1

d3

D4

D6

D7

D8

l3

l4

l1k

18

32

34

27

33

3

26

11.5

37.5

20

34

36

29

35

3

26

11.5

37.5

22

36

38

31

37

3

26

11.5

37.5

24

38

40

33

39

3

28.5

11.5

40

25

39

41

34

40

3

28.5

11.5

40

28

42

44

37

43

3

31

11.5

42.5

30

44

46

39

45

3

31

11.5

42.5

32

46

48

42

48

3

31

11.5

42.5

33

47

49

42

48

3

31

11.5

42.5

35

49

51

44

50

3

31

11.5

42.5

38

54

58

49

56

4

31

14

45

40

56

60

51

58

4

31

14

45

43

59

63

54

61

4

31

14

45

45

61

65

56

63

4

31

14

45

48

64

68

59

66

4

31

14

45

50

66

70

62

70

4

32.5

15

47.5

53

69

73

65

73

4

32.5

15

47.5

55

71

75

67

75

4

32.5

15

47.5

58

78

83

70

78

4

37.5

15

52.5

60

80

85

72

80

4

37.5

15

52.5

63

83

88

75

83

4

37.5

15

52.5

65

85

90

77

85

4

37.5

15

52.5

68

88

93

81

90

4

37.5

15

52.5

70

90

95

83

92

4

43

17

60

75

99

104

88

97

4

43

17

60

80

104

109

95

105

4

43

17

60

85

109

114

100

110

4

43

17

60

90

114

119

105

115

4

48

17

65

95

119

124

110

120

4

48

17

65

100

124

129

115

125

4

48

17

65

+ customized seals as per your drawings and specifications

Name
NV-1 Mechanical seal with set of small springs
pcs.
  $0.00
Description

DIN 24960

 

 

The mechanical seal with a spring in a metal case is recommended for sealing liquids containing solid substances or badly contaminated liquids, such as fuel oil. In such cases, it is not recommended to use multi-spring seals due to the risk of spring adhesion and jamming.

The secondary seal is completed by means of an O-ring.

The seal design ensures its low-cost repair, as its parts are easily replaceable.

A hydraulically relieved vesrion of the seal with one spring in a metal frame is available.

 

Analog:

Burgmann M78N

 

Materials for sealing faces:

carbographite

chromium steel

nickel chrome steel

increased rigidity nickel chrome steel

tungsten carbide

silicon carbide

ceramics (AI2O3)

 

Operating limits:

p = 16 bars

t = -40 ... 220В°C

v = 20 m/s

 

 

 

NV-2.1 carbographite pressed into the sealing surface frame

 

NV-2.2 silicon carbide pressed into the sealing surface frame

 

 

NV-2.3 seal surface with tungsten carbide soldered on

 

d1

d3

D4

D6

D7

D8

l3

l4

|1k

18

32

34

27

33

3

26

11.5

37.5

20

34

36

29

35

3

26

11.5

37.5

22

36

38

31

37

3

26

11.5

37.5

24

38

40

33

39

3

28.5

11.5

40

25

39

41

34

40

3

28.5

11.5

40

28

42

44

37

43

3

31

11.5

42.5

30

44

46

39

45

3

31

11.5

42.5

32

46

48

42

48

3

31

11.5

42.5

33

47

49

42

48

3

31

11.5

42.5

35

49

51

44

50

3

31

11.5

42.5

38

54

58

49

56

4

31

14

45

40

56

60

51

58

4

31

14

45

43

59

63

54

61

4

31

14

45

45

61

65

56

63

4

31

14

45

48

64

68

59

66

4

31

14

45

50

66

70

62

70

4

32.5

15

47.5

53

69

73

65

73

4

32.5

15

47.5

55

71

75

67

75

4

32.5

15

47.5

58

78

83

70

78

4

37.5

15

52.5

60

80

85

72

80

4

37.5

15

52.5

63

83

88

75

83

4

37.5

15

52.5

65

85

90

77

85

4

37.5

15

52.5

68

88

93

81

90

4

37.5

15

52.5

70

90

95

83

92

4

43

17

60

75

99

104

88

97

4

43

17

60

80

104

109

95

105

4

43

17

60

85

109

114

100

110

4

43

17

60

90

114

119

105

115

4

48

17

65

95

119

124

110

120

4

48

17

65

100

124

129

115

125

4

48

17

65

+ customized seals as per your drawings and specifications

Name
NV-2 Mechanical seal with spring in metal case
pcs.
  $0.00
Description

DIN 24960

 

 

Seals with a corrugated spring are specifically recommended for use at thermal power stations. Apart from the fact that no cases of spring blocking have been observed, an additional advatnage is that it is possible to produce such seals with a smaller diameter, if necessary, but with the same spring pressure. Besides, the spring design envisages special metal frames, in which the springs are inserted, and the seal can be used whichever the direction of shaft rotation is.

A relieved version of the seal with one corrugated spring is available.

 

Analog:

AESSEAL W07D / W07DM, Burgmann M7N, Vulcan 1677, Sterling 270, Flowserve Europac 600, KSB


 

Materials for sealing faces:

carbographite

chromium steel

nickel chrome steel

increased rigidity nickel chrome steel

tungsten carbide

silicon carbide

ceramics (AI2O3)

 

Operating limits:

p = 16 bars

t = -40 ... 220В°C

v = 20 m/s

 

 

 

NV-3.1 carbographite pressed into the sealing surface frame

 

 

NV-3.2 silicon carbide pressed into the sealing surface frame

 

 

NV-3.3 seal surface with tungsten carbide soldered on

 

d1

d3

D4

D6

D7

D8

l3

l4

I1k

18

32

34

27

33

3

26

11.5

37.5

20

34

36

29

35

3

26

11.5

37.5

22

36

38

31

37

3

26

11.5

37.5

24

38

40

33

39

3

28.5

11.5

40

25

39

41

34

40

3

28.5

11.5

40

28

42

44

37

43

3

31

11.5

42.5

30

44

46

39

45

3

31

11.5

42.5

32

46

48

42

48

3

31

11.5

42.5

33

47

49

42

48

3

31

11.5

42.5

35

49

51

44

50

3

31

11.5

42.5

38

54

58

49

56

4

31

14

45

40

56

60

51

58

4

31

14

45

43

59

63

54

61

4

31

14

45

45

61

65

56

63

4

31

14

45

48

64

68

59

66

4

31

14

45

50

66

70

62

70

4

32.5

15

47.5

53

69

73

65

73

4

32.5

15

47.5

55

71

75

67

75

4

32.5

15

47.5

58

78

83

70

78

4

37.5

15

52.5

60

80

85

72

80

4

37.5

15

52.5

63

83

88

75

83

4

37.5

15

52.5

65

85

90

77

85

4

37.5

15

52.5

68

88

93

81

90

4

37.5

15

52.5

70

90

95

83

92

4

43

17

60

75

99

104

88

97

4

43

17

60

80

104

109

95

105

4

43

17

60

85

109

114

100

110

4

43

17

60

90

114

119

105

115

4

48

17

65

95

119

124

110

120

4

48

17

65

100

124

129

115

125

4

48

17

65

+ customized seals as per your drawings and specifications

Name
NV-3 Mechanical seal with wavy spring
pcs.
  $0.00
Description

DIN 24960

 

 

Analog:

Sterling GNZ, Burgmann HJ92N / HJ97N

 

 

Friction couple materials:

Carbographite (Рђ, Р’)

tungsten carbide (РёР·)

silicon carbide (Qi, Q2)

ceramics Al203 (V)

 

Secondary seals:

fluorine rubber, FKM (V)

nitrile rubber (Р )

ethylene-propylene rubber, EPDM (Р•)

EFKM, FFKM(for example KalrezВ®)

fluorine rubber in PTFE shell, FEP

 

Parameters:

СЂ = 40 bars

t = -50 ... 220°С

v = 20m/s

 

Designed with a central protected spring

The location of the spring prevents any contact with the fluid being pumped

Ideal for viscous media, liquids containing abrasive particles and so on,

If it is to be used in sterile processes, it is supplied with electropolished surfaces and profiled elastomer rings to prevent cavity formation

Hydraulically relieved

Does not depend on the direction of shaft rotation

Dimensions as per DIN 24960 (EN12756)

d

d3

D6

D7

L1k

L2

L3

14

24.0

21

25

38.0

5.5

32.5

16

26.0

23

27

40.0

5.5

34.5

18

32.0

27

33

37.5

7.0

30.5

20

34.0

29

35

37.5

7.0

30.5

24

38.0

33

39

40.0

7.0

33.0

25

39.0

34

40

40.0

7.0

33.0

28

42.0

37

43

42.5

7.0

35.5

30

44.0

39

45

42.5

7.0

35.5

32

47.0

42

48

42.5

7.0

35.5

33

47.0

42

48

42.5

7.0

35.5

35

49.0

44

50

42.5

7.0

35.5

38

54.0

49

56

45.0

8.0

37.0

40

56.0

51

58

45.0

8.0

37.0

43

59.0

54

61

45.0

8.0

37.0

44

61.0

56

63

45.0

8.0

37.0

50

66.0

62

70

47.5

9.5

38.0

53

68.5

65

73

47.5

9.5

38.0

60

80.0

72

80

52.5

10.5

42.0

65

85.0

77

85

52.5

10.5

42.0

70

90.0

83

92

60.0

11.5

48.5

75

99.0

88

97

60.0

11.5

48.5

80

104.0

95

105

60.0

11.5

48.5

95

119.0

110

120

65.0

13.0

52.0

100

124.0

115

125

65.0

13.0

52.0

 

Name
BV-TNG Elastic mechanical seal
pcs.
  $0.00
Description

 

NV-1D universal double seal for water and chemical pumps

 

Analog:

Burgmann M74-D

 

Design with a set of small springs.

Not hydraulically unloaded.

It does not depend on the direction of rotation of the shaft.

Dimensions to DIN 24960 (EN12756).

Materials of friction pair:

- carbon-impregnated carbon resin (B)

- antimony impregnated carbon graphite (A)

- silicon carbide (Q1, Q2)

- tungsten carbide (U3)

- ceramic Al O (V) 2 3

 

Elastomers:

- fluorine rubber, FKM (V)

- nitrile rubber (P)

- ethylene-propylene rubber, EPDM (E)

- PTFE

 

Parameters:

- p = 16 (25) bars

- t = -50 ... 220В°C

- v = 20 m/s

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
NV-1D Dual mechanical seal in metal case
pcs.
  $0.00
Description

NV-FL mechanical seal in metal case for Flygt and Grindex pumps

 

Special seals designed for installation in FLYGT pumps.

Primary and secondary (upper and lower) seals.

FlygtВ® pump brand Seal size NV-FL
2004,2008,2012,2016 15 mm
2024 20 mm
2050,2052 15 mm
2060 20 mm
2066 20 mm
2070 22 mm
2071 22 mm
2075 20 mm
2082-330В  22 mm
2084 35 mm
2090,2125,2140 28 mm
2135В  35 mmВ 
2101В  20 mmВ 
2102 22 mmВ 
2151-010,-011,-050 35 mmВ 
2201-010В  45/35 mm
2201-011 HT/MTВ  45/35 mmВ 
2201-011 LT 45/35 mm
2201-080,В  -320, -430, -480, -590, -690 45/35 mmВ 
2250 60 mm
2400 60 mm
2610, 2620 20 mm
2630, 2640 20 mm
2660 25 mm
2670 35 mm
3041 (РєСЂРѕРјРµ -250) 20 mm
3057 20 mm
3065 20 mm
3067 20 mm
3068 20 mm
3080В (РєСЂРѕРјРµ -330) 20 mm
3080-330 35 mm
3082 22 mm
3085 20 mm
3101 28 mm
3102 25 mm
3126-090, 3126-180 35 mm
3126-091, -180, -280, -290, -998 35 mm
3126-181 35 mm
3127 35 mm
3140 (РєСЂРѕРјРµ -980) 45 mm
3152 45 mm
3153 35 mmВ 
3170 60 mmВ 
3171 45 mmВ 
3200 60 mmВ 
3201 60 mmВ 
3202 60 mmВ 
3230, 3305, 3357 90/80 mmВ 
3231, 3306, 3356 90/80 mm
3300В  90/80 mm
3310, 3350В  90/120 mmВ 
3311, 3312 90/120 mmВ 
3351 90/120 mm
3355 90/80 mmВ 
3400, 3501, 3531, 3602В  90 mm
3500, 3530, 3600, 3601 90/120 mmВ 
3800 90/120 mmВ 
4351,4352, 4400 20 mmВ 
4410, 4430, 4460В  60 mmВ 
4450 35 mmВ 
4630, 4640 45 mm
4650, 4660 45 mmВ 
4670, 4680 60 mmВ 
5100-210, -211, -220, -221В  35 mm
5100-250, -251, -260, -261 45 mmВ 
5100-300, -310 60 mmВ 
5150-300, -310 60 mmВ 
5150-350, -360 90 mmВ 
5530 35 mmВ 
5540 45 mmВ 
7045 60 mmВ 
7050, 7051 90/80 mmВ 
7060, 7076В  90/80 mmВ 
7055, 7061 90/80 mm
7080 90/80 mm
7081, 7101, 7121 90 mmВ 
7100, 7115, 7120, 7140 90/120 mmВ 
7570, 7585 90/120 mm
Electric motors 600 series 90 mmВ 
Electric motors 700 series 90 mm
Electric motors 800 series 105 mmВ 
Electric motors 900 series 105 mmВ 

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
NV-FL Mechanical seal in metal case
pcs.
  $0.00
Description

 

NV-4 universal seal with short axial length

 

Analog:

AES W02, ROTEN UNITEN 7K

 

Wave spring design.

Not hydraulically unloaded.

It does not depend on the direction of rotation of the shaft.

 

Materials of friction pair:

- carbon graphite (A, Р’)

- special chrome molybdenum steel (Р•)

- wolfram carbide (U3)

- silicon carbide (Q1, Q2)

 

Parameters:

- p = 16 (25) bars

- t = -50 ... 220В°C

- v = 20 Рј/СЃ

 

Does not require modification of the pump.

 

To order seals, you only need to know the brand of the pump or the serial number of the seal.

 

Name
NV-4 Mechanical seal in metal case
pcs.
  $0.00
Description

NV-SV/026 Mechanical seal for Lowara pumps SV series:

- 33

- 46

- 66

- 92

 

Analog:

Lowara, AES P0LXB

 

For stepped shaft d22 / d26 mm.

Design with central spring.

Hydraulically unloaded.

It does not depend on the direction of rotation of the shaft.

 

Materials of friction pair:

- resin-impregnated carbon graphite (Р’)

- silicone carbide (Q1)

 

Elastomers:

- FKM (V)

- NBR (P)

- EPDM (E)

 

Parameters:

СЂ = 20 bars

t = -30 ... 120°С

v = 20 m/s

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
NV-SV/026 Mechanical seal for Lowara pumps
pcs.
  $0.00
Description

NV-SR Mechanical seal for Alfa Laval pumps series SSP SR/SRU:

- SR1 (shaft 20 mm)

- SR2 (shaft 30 mm)

- SR3 (shaft 35 mm)

- SR4 (shaft 45 mm)

- SR5 (shaft 55 mm)

- SR6 (shaft 75 mm)

 

Materials of friction pair:

- special CrMo carbon graphite steel

- silicon carbide carbon graphite

- silicon carbide on silicon carbide

 

Elastomers:

- Viton (FPM)

- NBR (P)

- EPDM (E)

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
NV-SR Mechanical seal for Alfa Laval pumps
pcs.
  $0.00
Description

NV-D-SR Dual mechanical seal for Alfa Laval pumps series SSP SR/SRU:

- SR1 (shaft 20 mm)

- SR2 (shaft 30 mm)

- SR3 (shaft 35 mm)

- SR4 (shaft 45 mm)

- SR5 (shaft 55 mm)

- SR6 (shaft 75 mm)

 

Materials of friction pair:

- special CrMo carbon graphite steel

- silicon carbide carbon graphite

- silicon carbide on silicon carbide

 

Elastomers:

- Viton (FPM)

- NBR (P)

- EPDM (E)

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
NV-D-SR Dual mechanical seal for Alfa Laval pumps
pcs.
  $0.00
Description

BV–2KS/120 mechanical seal for KSB pumps series SEWATEC/AMAREX KRT

 

Design with a set of small springs.

The springs are out of contact with the pumped liquid.

Fixed spring assembly.

Hydraulically unloaded.

Shaft diameter 120 mm

 

Materials of friction pair:

- silicon carbide (Q1, Q2)

 

Elastomers:

- FKM (V)

 

Springs:

- X12CrNi17.7

 

Other metal parts:

- stainless steel

 

Do not require any adaptation of the pump.

 

To order seals, it is sufficient to know the pump grade or the manufacturer's seal number.

 

Name
BV-2KS/120 mechanical seal for KSB pumps
pcs.