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Mechanical carbon

Mechanical seal carbon graphite ring
Product Name: Mechanical seal carbon graphite ring
Product details
Table 1  Impregnated object No. of mechanical carbon

Impregnated object name
Aluminium alloy Babbit alloy Copper alloy Antimony Furan resin Phenolic resin Sliver Epoxy resin Boron-impregnated silicate glass
Impregnated object No. R
 Mechanical carbon class
The description of mechanical sealing class series No.

Class

Series No.

Technical characteristics and application

Carbon—graphite material

1

With high mechanical strength and good wear resistance, and used for mechanical sealing, bearing and doctor blade etc.
Electrochemical graphite material

2

With higher mechanical strength and lubricity, good shock resistance, and used for mechanical, bearing etc. wear-resistant material.
Resin-carbon composite material

3

With high mechanical strength and good wear resistance, and used for mechanical sealing, bearing etc. wear-resistant material.
Metal graphite material

4

With high-temperature resistance, shock resistance and good heat-conducting performance, and used for the operating condition of high-temperature and higher shock load.
Type technical performance

Class
Type Impregnated material Shore hardness ≥ Flexural strength≥,MPa Compressive strength ≥,MPa Open porosity≤,% Bulk density g/cm3≥ Thermal expansion coefficient 10-6/℃≤ Using temperature ℃
Carbon—graphite M120  

60

25

81

18

1.60 4 350
M154

40

20

40

28

1.42   350
M164

70

30

70

16

1.50   400
M165

80

35

100

13

1.60   400
M238

40

35

75

18

1.70 3.2 450
M254

40

25

45

25

1.65 3.4 450
Resin—impregnated carbon—graphite M106H (H)Epoxy resin

65

51

180

1.0

1.65 4.8 200
M120H

65

49

176

1.0

1.70 4.8 200
M168H

75

58

200

1.0

1.75 4.5 200
M238H

40

39

78

1.0

1.85 4.5 250
M254H

42

35

74

1.0

1.80 4.5 200
M255H

40

34

78

1.0

1.80 4.5 200
T253H

50

40

90

1.5

1.78 4.5 200
M106K (K)Furan resin

75

55

182

2.0

1.62   200
M120K

70

50

179

2.0

1.70   200
M158K

75

54

179

1.2

1.65   200
M238K

50

44

98

2.0

1.85 4.5 200
Metal—impregnated carbon—graphite M106D (D)Antimony

75

55

170

3

2.2 6.0 500
M120D

70

50

140

3

2.2 6.0 500
M158D

80

55

180

3

2.2 6.0 500
M169D

80

60

200

2.0

2.2 6.0 500
M170D

70

40

120

2.0

2.2 6.0 500
M254D

45

35

65

3.0

2.2 5.5 500
M120P (P)Copper alloy

65

65

200

3.0

2.4 6.0 400
M152P

60

77

250

2.0

2.6 6.0 400
M158P

65

70

240

2.0

2.4 6.0 400
M254P

40

45

120

2.0

2.6 6.0 400
M256P

65

77

200

2.0

2.6 6.0 400
M262P

35

35

80

5.0

2.6 5.5 400
M169G (G)Sliver

70

70

200

2.5

2.9   1350
1350 environment
M269G

68

68

195

2.5

2.9   1350
1350 environment
M120B (B)Babbit alloy

50

50

130

10

2.3 5.5 200
M254B

40

34

64

10

2.3 5.2 200
M113A (A)Aluminium alloy

60

98

250

2.0

2.0 8.0 350
M262A

35

74

147

2.0

2.0 7.5 400
Glass—impregnated carbon—graphite M106R (R)Glass

110

75

210

1.5

1.9

5.0

610

M120R

95

57

190

1.5

1.9 5.0 610
M254R

65

55

100

1.5

1.9 5.0 610
M262R

75

48

138

1.5

1.9 5.0

610

resin—carbon M353  

45

45

120

1.0

1.75   100
M352

35

35

80

1.0

1.75   100
M356

50

50

140

1.0

1.75   100
M357

40

40

80

1.0

1.75 9.0 100
    Type technical performance

Class
Type Impregnated material Shore hardness Flexural strength MPa Compressive strength MPa Open porosity % Bulk
density g/cm3≥
Thermal expansion coefficient 10-6/℃ Using temperature ℃
- x - x - x - x
Carbon fiber composites material M361   55   65   Shock resistance 4     1.60   200
  M369 45   80   Shock resistance 6     1.40   200
Silicified graphite T1056   HR10/60 100 50   105   2.0   1.79   500
 
Class Type Matrix Adaptable process
Load MPa Speed m/min PV value MPa·m/min Temperature ℃
Metal embedded graphite(M551)   Bronze 10 80 60 400
  Copper alloy 50 15 200 400
  Special copper alloy 25 30 100 400
  Cast iron 5 50 40 500
  Stainless steel 10 100 300 500
The technical performance above, which is obtained in developing process, is for type selection.    
The chemical corrosion resistant performance of mechanical carbon-graphite material

Medium
Concentration% Pure carbon graphite Resin—impregnated carbon—graphite Metal—impregnated carbon—graphite Hot—pressing carbon—graphite
Phenolic aldehyde Epoxy Furan Antimony Babbit alloy Aluminium alloy Copper alloy
Hydrochloric acid 50 0 0 0
Sulfuric acid 50 0 0 0
Sulfuric acid 98 0 0
Nitric acid 50 0 0 0 0 0
Nitric acid 浓strong
Hydrofluoric acid 40 0 0 0
Phosphoric acid 85 0 0 0
Chromic acid 10 0 0 0 0 0 0
Acetic acid 36 0 0 0 0
Sodium hydroxide 60 0 0 0
Potassium hydroxide 浓strong 0 0 0
Seawater   0 0 0 0 0
Benzene 100 0
Ammonia water 10 0 0
Acetone 100 0 0 0 0
Urea 70 0
Carbon tetrachloride  
Engine oil   0 0
Gasoline   0 0 0
  Type technical performance

Class
Basic
Static ring (stationary ring)) 缺图 缺图 缺图
Rotary ring (rotating ring) 缺图 缺图 缺图
Bearing shaft sealing ring of piston ring 缺图 缺图 缺图
Piston ring packing 缺图 缺图 缺图
Class Radial bearing Anti-thrust bearing Radial anti-thrust bearing Shaft pad Embedded graphite bearing
Basic form 缺图 缺图 缺图 缺图 缺图
 
 Application range and operating condition of mechanical carbon

Type
Equipment Application The friction pair materials Working medium (≤)Technical condition (less than)
M121 Clutch device Brake plate and frication plate Chrome plated steel Air and dry friction Using temperature:350℃
M238 Turbine Piston ring and bearing Chrome plated steel Low-pressure steam Medium pressure:0.5MPa
M164 Caustic soda calcining furnace Bearing Chrome plated steel Steam Using temperature:400℃
Medium pressure:3.5MPa
M165 End-face seal
M106H M106K M158K Centrifugal pump, compressor and flow instrument End face seal, piston ring and bearing Tungsten carbide, cast iron, bronze, cemented carbide, chrome plated steel, silicon carbide and silicon nitride Oils, water, high-temperature & high-pressure steam, magmatic water with crystalline particles, nitrogen sulfide, in alkane, liquid hydrocarbon, liquid ammonia, 30% potassium carbonate solution, 50% sodium hydroxide solution etc. alkaline medium. Revolving speed:12000r/pm
Using temperature:200℃
Medium pressure:3MPa
PV value:12 MPa/m/s
M120H  M120K Centrifugal pump, compressor, boiler preheater, submersible pump and vacuum pump End face seal, piston ring, bearing, explosion-proof membrane and rotary vane Tungsten carbide, cast iron, bronze, cemented carbide, chrome plated steel, silicon carbide and silicon nitride Oils, water, gas, weak acid medium, and M120K uses sulfuric acid of general concentration. Revolving speed:2900r/pm
Using temperature:200℃
Medium pressure:3MPa
PV value:8MPa/m/s
M254H  M254K Centrifugal pump, flow instrument, cigarette making machine, compressor and fermentation tank of water turbine End face seal, piston ring, bearing and gas distribution disc Ceramic, cemented carbide, bronze, stainless steel and chrome plated steel Oils, water, organic acid, alkali, salt etc. Revolving speed:2900r/pm
Using temperature:200℃
Medium pressure:2MPa
M238H Large ammonia pressure turbine Floating ring and piston ring Stainless steel Ammonia and air Using temperature:-32℃-350℃
PV value:15MPa/m/s
M255H Vacuum pressure-increasing air pump and gas compressor for printing machinery Sliding vane of oil-free lubrication Cast iron Air and dry friction Revolving speed:1400r/pm
Using temperature:200℃
Medium pressure:2MPa
Vacuum degree:50%
M113A Rotary engine and vacuum pump Radial sealing rotary vane Chrome plated steel Air, vacuum oil and dry friction Revolving speed:4000r/pm
Using temperature:350℃
  Application range and operating condition of mechanical carbon
Type Equipment Application The friction pair materials Working medium (≤)Technical condition (less than)
M120B Gas compressor, submersible pump etc. End face seal, bearing and rotary vane Cast iron, cemented carbide and stainless steel Air, oils, seawater, salt etc. Using temperature:30-200℃
:4000r/pm
M254B
M106P
M120P
M262P
M256P
Steam-flow meter, high-temperature hot oil pump, aircraft engine, fuel tank, starting motor, cigarette making machine and draught fan End face seal, bearing, gas distribution disc and the sliding plate of electric locomotive Ceramic, cemented carbide, stainless steel, chrome plated steel and alloy steel Dry friction, water, high-temperature water, seawater, steam and organic oil Using temperature:-200~+400℃
M106D M120D M254D
M158D
M170D
M169D
Clarified water pump, nuclear secondary pump, boiler feed pump, drying stove and electrical equipment End face seal, bearing and bush Cast iron, cemented carbide, stainless steel, chrome plated steel, silicon carbide and silicon nitride Air, oils, water, acid, alkali, salt etc. Revolving speed:5000r/pm
Using temperature:500℃
Medium pressure:5MPa
M353  M357 Textile printing and dyeing machine, water pump and heat-setting machine End face seal, bearing and brake pad Stainless steel, chrome steel and carbon steel Water, air, hydrogen peroxide, weak acid, weak alkali, salt solution and organic solution Revolving speed:M357-2900r/pm
M353-2000 r/pm
Using temperature:200℃
Medium pressure:3MPa
M551 Low speed equipment, low speed and heavy load Sliding bearing, shaft sleeve, bush and sliding block   Oil-free lubrication Load:50 MPa
Using temperature:500℃
PV value:5MPa/m/s
M1056 Shielding pump separator and duster Bearing, sealing ring, nozzle, metallurgical crucible, evaporation boat, high-temperature resistant parts and strong corrosion resistant parts Silicified graphite, cemented carbide and stainless steel Acid, alkali, salt, organic compound, high-temperature water and medium with solid hard particle Revolving speed:1400r/pm
Revolving speed:3000r/pm
Using temperature:500℃
PV value:70MPa/m/s


Mechanical seal is widely used for pump, kettle and other rotary machines, and used in petroleum, chemical engineering, machinery, pharmacy, metallurgy, spaceflight and scientific research etc. fields.
Main mechanical seal products:
1. Mechanical seal for pump: types of 103, 104, 105, 109, 110, 114.
2. Mechanical seal for kettle: types of 201, 202, 203, 204.
3. Mechanical seal according to ISO3069 and DIN24960: types of 101, 120, B120.
4. Mechanical seal of rubber bellow: types of 301, 302, 303, 304.
5.Various mechanical seals can be designed and produced according to user’ requirements.
Type 101 mechanical sealing
Using condition:
Sealing fluid: water, wine, drinks, medicament solution, lubricating oil, gasoline, kerosene etc. con-corrosive, weak corrosive and no-Impurity particles liquid.
the temperature of sealing cavity:-20~100℃
line velocity:≤15m/s
101型Type 101
Main size
Shaft diameter
D D1 D2 D3 L1 L2 L3
20 28 23 33 33 28 9 9
22 29 25 35 35 31 10 9
25 33 28 38 38 33 12 9
28 37 31 41 41 36 15 9
30 39 33 44 44 36 15 9
35 43 38 49 49 36 15 8
40 50 43 56 55 40 15 10
45 55 48 62 61 43 18 10
50 62 53 67 66 45 20 10
55 67 58 72 71 45 20 10
60 73 63 77 77 50 20 12
65 80 68 83 83 50 20 12
70 85 73 88 88 60 30 12
   
Sealing fluid: oil, water, weak acid, weak alkali etc. general corrosive chemical medium.
the pressure of sealing cavity:0-0.8 MPa (Type 104)
0.8-3.0 MPa (Type 110)
the temperature of sealing cavity:-20~100℃ 
line velocity:≤15m/s
Type 104

D1
D3 D6 D7 L1 L3 L2
16 33 25 33 53 37 8
18 35 28 36 56 40 11
20 37 30 40 59 40 11
22 39 32 42 62 43 14
25 42 35 45 62 43 14
28 45 38 48 63 44 15
30 52 40 50 68 49 15
35 57 45 55 70 51 17
40 62 50 60 73 54 20
45 67 55 65 79 60 25
50 72 60 70 82 63 28
55 77 65 75 84 65 30
60 82 70 80 84 65 30
65 92 80 90 96 74 35
70 97 85 97 101 76 37
75 102 90 102 101 76 37
80 107 95 107 106 81 42
85 112 100 112 107 82 42
90 117 105 117 108 83 43
95 122 110 122 108 83 43
100 127 115 127 108 83 43
110 141 130 142 132 105 60
120 151 140 152 132 105 60
    Type 110

D1
D0 D3 D6 D7 L1 L3 L2 E
16 11 33 25 33 61 45 8 2
18 13 35 28 36 64 48 11 2
20 15 37 30 40 67 48 11 2
22 17 39 32 42 70 51 14 2
25 20 42 35 45 70 51 14 2
28 22 45 38 48 71 52 15 2
30 25 52 40 50 77 58 15 3
35 28 57 45 55 80 61 17 3
40 34 62 50 60 83 64 20 3
45 38 67 55 65 89 70 25 3
50 44 72 60 70 92 73 28 3
55 48 77 65 75 94 75 30 3
60 52 82 70 80 94 75 30 3
65 58 92 80 90 103 81 35 3
70 62 97 85 97 111 86 37 3
75 66 102 90 102 111 86 37 3
80 72 107 95 107 116 91 42 3
85 76 112 100 112 117 92 42 3
90 82 117 105 117 118 93 43 3
95 86 122 110 122 118 93 43 3
100 90 127 115 127 118 93 43 3
110 100 141 130 142 144 117 60 3
120 110 151 140 152 144 117 60 3
               
Sealing fluid: oil, water and non-corrosive or weak corrosive medium
the pressure of sealing cavity:0-0.8 MPa
the temperature of sealing cavity:-20~100℃ 
Type 301
Main size D0  Shaft diameter D1 D2 D3 L1 L2
16 26 33 40 23 15
18 28 35 40 23 15
20 29 37 40 23 15
30 40 50 53 28 18
35 47 56 65 28 18
40 52 60 65 28 18
45 58 67 80 28 18
50 63 72 83 28 18
55 69 77 90 30 20
60 74 82 95 30 20
65 80 87 104 35 23
70 85 92 109 35 23

Sealing fluid: oil, water and weak corrosive medium
the pressure of sealing cavity:0-0.5 MPa
the temperature of sealing cavity:-20~100℃ 
line velocity:≤10m/s
Type 304

Main size
D0
Shaft diameter

D2 D3 L1 L2 L3
10 25 27 25 17 6.5
12 25 27 25 17 6.5
16 32 31 28.3 18 8.5
18 35 34 28.3 18 8.5
20 35 34 28.3 18 8.5
22 42 43 32 21 9.5
25 42 43 32 21 9.5