Mechanical carbon

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.	Ａ	Ｂ	Ｐ	Ｄ	Ｋ	Ｆ	Ｇ	Ｈ	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