12 M74D Mechanical Seals for Pumps Pusher Seals

• Structure: Single End
• Pressure: High Pressure Mechanical Seals
• Speed: Ultra-High-Speed Mechanical Seal
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 12 M74D
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Type: Custom-Made, TS
• Balance: Balanced
• Payment Method: T/T, Western Union, L/C etc
• Replace: Burgmane Seals
• Export Port: Ningbo Port, Shanghai Port
• Products Packaging: White Box
• Min Order Qty: 5 Pcs
• Transport Package: Carton Packing
• Specification: Inch shaft size 0.625-4.000
• Trademark: Custom-made, TS
• Origin: Made in China
• HS Code: 8484200090
• Production Capacity: 1000000 PCS/Year
• Package Size: 38.00cm * 38.00cm * 32.00cm
• Package Gross Weight: 22.000kg

Product Description

Product Description

(1)Features
• For plain shafts 
• Dual seal  
• Unbalanced
• Rotating multiple springs
• Independent of direction of rotation
• Seal concept based on the M7 range
• Variant with pumping screw available (M74F-D)

(2)Advantages
• Efficient stock keeping due to easily interchangeable faces
• Extended selection of materials
 • Flexibility in torque transmissions
 • EN 12756 (for connection dimensions d1 up to 100 mm (3.94")

(3)Operating range (see note on page 1)
Shaft diameter: d1 = 18 ... 200 mm (0.71" ... 7.87")
Pressure: p1 = 25 bar (363 PSI)
Temperature: t = -50 °C ... +220 °C (-58 °F ... +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement:
d1 up to 100 mm: ±0.5 mm
d1 from 100 mm: ±2.0 mm

(4)Materials
Seal face: Special cast CrMo steel (S), 
Silicon carbide (Q1, Q2)
Seat G9: Carbon graphite antimony impregnated (A), 
Carbon graphite resin impregnated (B), 
Silicon carbide (Q1*, Q2*) 
Seat G4: Silicon carbide (Q1*, Q2*) 
Seat G6: Silicon carbide (Q1*, Q2*) 
Seat G13: Carbon graphite antimony impregnated (A), 
Carbon graphite resin impregnated (B)
* Cannot be combined with seal face in S

(5)Standards and approvals
• EN 12756

(6)Item     Part no.t DIN 24250            Description
1.1            472.1                                    Seal face
1.2            472.2                                    Seal face
1.3            474                                       Thrust ring
1.4            485                                       Drive collar
1.5            477                                       Spring
1.6            904                                       Set screw
1.7            412.1                                    O-Ring
1.8            412.2                                    O-Ring 
2               475.1                                    Seat (G9) 
3               412.3                                    O-Ring 
4               475.2                                    Seat (G9) 
5               412.4                                    O-Ring

(7)Recommended applications
• Chemical industry
• Process industry
• Low solids content and low abrasive media 
• Toxic and hazardous media 
• Media with poor lubrication properties
• Adhesives 
• Chemical standard pu
 

(8)Product variant
M74F-D
Dimensions, items and descriptions
as for M74-D, but with pumping screw (Item no. 1.4). 
(Viscosity ≤ ISO VG10). 
Dependent on direction of rotation.

(9)Seat alternatives
 

 (10) Torque transmissions

 

Detailed Photos

 

Product Parameters

 

d1	d3	d6	d7	d8	d9	d11	d12	ds	L1	L3	L4	L5	L6	L7	L8	L9	L10	L11	L12	L13	L14	L15	L16	L28	L31	L35	Mx	t	R
18*	33.0	27.0	33.0	3.0	4.0	24.0	30.0	-	61.0	38.0	19.0	2.0	5.0	9.0	19.5	11.5	8.5	12.5	9.0	10.0	8.0	1.5	5.0	7.5	17.0	15.0	M5	3.5	1.5
20*	35.0	29.0	35.0	3.0	4.0	29.5	35.0	-	61.0	38.0	19.0	2.0	5.0	9.0	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5.0	7.5	17.0	15.0	M5	3.5	1.5
22*	37.0	31.0	37.0	3.0	4.0	29.5	35.0	42.0	61.0	38.0	19.0	2.0	5.0	9.0	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5.0	7.5	17.0	15.0	M5	3.5	1.5
24*	39.0	33.0	39.0	3.0	4.0	32.0	38.0	44.0	61.0	38.0	19.0	2.0	5.0	9.0	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5.0	7.5	17.0	15.0	M5	3.5	1.5
25*	40.0	34.0	40.0	3.0	4.0	32.0	38.0	45.0	61.0	38.0	19.0	2.0	5.0	9.0	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5.0	7.5	17.0	15.0	M5	3.5	1.5
28*	43.0	37.0	43.0	3.0	4.0	36.0	42.0	47.0	62.0	39.0	19.5	2.0	5.0	9.0	19.5	11.5	8.5	14.0	10.0	11.0	9.0	1.5	5.0	7.5	17.5	15.0	M6	3.5	1.5
30*	45.0	39.0	45.0	3.0	4.0	39.2	45.0	49.0	62.0	39.0	19.5	2.0	5.0	9.0	19.5	11.5	8.5	14.0	11.5	11.0	10.5	1.5	5.0	7.5	17.5	15.0	M6	3.5	1.5
32*	47.0	42.0	48.0	3.0	4.0	42.2	48.0	51.0	62.0	39.0	19.5	2.0	5.0	9.0	19.5	11.5	8.5	14.0	11.5	11.0	10.5	1.5	5.0	7.5	17.5	15.0	M6	3.5	1.5
33*	48.0	42.0	48.0	3.0	4.0	44.2	50.0	51.0	62.0	39.0	19.5	2.0	5.0	9.0	19.5	11.5	8.5	14.5	12.0	11.5	10.5	1.5	5.0	7.5	17.5	15.0	M6	3.5	1.5
35*	50.0	44.0	50.0	3.0	4.0	46.2	52.0	54.0	62.0	39.0	19.5	2.0	5.0	9.0	19.5	11.5	8.5	14.5	12.0	11.5	11.0	1.5	5.0	7.5	17.5	15.0	M6	3.5	1.5
38*	55.0	49.0	56.0	4.0	4.0	49.2	55.0	59.0	69.0	41.0	20.5	2.0	6.0	9.0	22.0	14.0	10.0	14.5	11.3	11.5	10.3	1.5	5.0	9.0	18.5	15.0	M6	3.5	1.5
40*	57.0	51.0	58.0	4.0	4.0	52.2	58.0	61.0	70.0	42.0	21.0	2.0	6.0	9.0	22.0	14.0	10.0	14.5	11.8	11.5	10.8	1.5	5.0	9.0	19.0	15.0	M6	3.5	1.5
43*	60.0	54.0	61.0	4.0	4.0	53.3	62.0	65.0	70.0	42.0	21.0	2.0	6.0	9.0	22.0	14.0	10.0	17.0	13.2	14.3	12.0	2.0	6.0	9.0	19.0	15.0	M6	3.5	2.5
45*	62.0	56.0	63.0	4.0	4.0	55.3	64.0	66.0	70.0	42.0	21.0	2.0	6.0	9.0	22.0	14.0	10.0	17.0	12.8	14.3	11.6	2.0	6.0	9.0	19.0	15.0	M6	3.5	2.5
48*	65.0	59.0	66.0	4.0	4.0	59.7	68.4	69.0	70.0	42.0	21.0	2.0	6.0	9.0	22.0	14.0	10.0	17.0	12.8	14.3	11.6	2.0	6.0	9.0	19.0	15.0	M6	3.5	2.5
50*	67.0	62.0	70.0	4.0	4.0	60.8	69.3	71.0	73.0	43.0	21.5	2.5	6.0	9.0	23.0	15.0	10.5	17.0	12.8	14.3	11.6	2.0	6.0	9.5	19.5	15.0	M6	3.5	2.5
53*	70.0	65.0	73.0	4.0	4.0	63.8	72.3	75.0	73.0	43.0	21.5	2.5	6.0	9.0	23.0	15.0	12.0	17.0	13.5	14.3	12.3	2.0	6.0	11.0	19.5	15.0	M6	3.5	2.5
55*	72.0	67.0	75.0	4.0	4.0	66.5	75.4	76.0	73.0	43.0	21.5	2.5	6.0	9.0	23.0	15.0	12.0	18.0	14.5	15.3	13.3	2.0	6.0	11.0	19.5	15.0	M8	3.5	2.5
58*	79.0	70.0	78.0	4.0	5.0	69.5	78.4	83.0	86.0	56.0	28.0	2.5	6.0	9.0	23.0	15.0	12.0	18.0	14.5	15.3	13.3	2.0	6.0	11.0	23.5	19.0	M8	3.5	2.5
60*	81.0	72.0	80.0	4.0	5.0	71.5	80.4	85.0	86.0	56.0	28.0	2.5	6.0	9.0	23.0	15.0	12.0	18.0	14.5	15.3	13.3	2.0	6.0	11.0	23.5	19.0	M8	3.5	2.5
63*	84.0	75.0	83.0	4.0	5.0	74.5	83.4	88.0	85.0	55.0	27.5	2.5	6.0	9.0	23.0	15.0	12.0	18.0	14.2	15.3	13.3	2.0	6.0	11.0	24.5	19.0	M8	3.5	2.5
65*	86.0	77.0	85.0	4.0	5.0	76.5	85.4	95.0	85.0	55.0	27.5	2.5	6.0	9.0	23.0	15.0	12.0	18.0	14.2	15.3	13.0	2.0	6.0	11.0	24.5	19.0	M8	3.5	2.5
68*	89.0	81.0	90.0	4.0	5.0	82.7	91.5	93.0	91.0	55.0	27.5	2.5	7.0	9.0	26.0	18.0	12.5	19.0	14.9	16.0	13.7	2.0	6.0	11.3	24.5	19.0	M8	3.5	2.5
70*	91.0	83.0	92.0	4.0	5.0	83.0	92.0	95.0	92.0	56.0	28.0	2.5	7.0	9.0	26.0	18.0	12.5	18.0	14.2	15.3	13.0	2.0	6.0	11.3	23.5	19.0	M8	3.5	2.5
75*	99.0	88.0	97.0	4.0	5.0	90.2	99.0	105.0	92.0	56.0	28.0	2.5	7.0	9.0	26.0	18.0	12.5	18.0	15.2	15.3	14.0	2.0	6.0	11.3	25.5	19.0	M8	3.5	2.5
80*	104.0	95.0	105.0	4.0	5.0	95.2	104.0	109.0	92.5	56.0	28.0	3.0	7.0	9.0	26.2	18.2	13.0	19.0	16.2	16.3	15.0	2.0	6.0	12.0	25.5	19.0	M8	3.5	2.5
85*	109.0	100.0	110.0	4.0	5.0	100.2	109.0	114.0	92.5	56.0	28.0	3.0	7.0	9.0	26.2	18.2	15.0	19.0	16.0	16.3	14.8	2.0	6.0	14.0	25.0	19.0	M8	3.5	2.5
90*	114.0	105.0	115.0	4.0	5.0	105.2	114.0	119.0	92.5	56.0	28.0	3.0	7.0	9.0	26.2	18.2	15.0	19.0	16.0	16.3	14.8	2.0	6.0	14.0	25.5	19.0	M8	3.5	2.5
95*	119.0	110.0	120.0	4.0	5.0	111.6	120.3	124.0	90.5	56.0	28.0	3.0	7.0	9.0	25.2	17.2	15.0	20.0	17.0	17.3	15.8	2.0	6.0	14.0	25.0	19.0	M8	3.5	2.5
100*	124.0	115.0	125.0	4.0	5.0	114.5	123.3	129.0	90.5	56.0	28.0	3.0	7.0	9.0	25.2	17.2	15.0	20.0	17.0	17.3	15.8	2.0	6.0	14.0	25.0	19.0	M8	3.5	2.5
105	138.0	122.2	134.3	5.0	7.0	-	-	143.0	108.0	68.0	34.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	30.5	22.0	M8	3.5	-
110	143.0	128.2	140.3	5.0	7.0	-	-	148.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
115	148.0	136.2	148.3	5.0	7.0	-	-	153.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
120	153.0	138.2	150.3	5.0	7.0	-	-	158.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
125	158.0	142.2	154.3	5.0	7.0	-	-	163.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
130	163.0	146.2	158.3	5.0	7.0	-	-	168.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
135	168.0	152.2	164.3	5.0	7.0	-	-	173.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
140	173.0	156.2	168.3	5.0	7.0	-	-	178.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
145	178.0	161.2	173.3	5.0	7.0	-	-	183.0	110.0	70.0	35.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
150	183.0	168.2	180.3	5.0	7.0	-	-	188.0	114.0	70.0	35.0	2.0	10.0	-	32.0	22.0	-	-	-	-	-	-	-	-	31.5	22.0	M8	3.5	-
155	191.0	173.2	185.3	5.0	7.0	-	-	196.0	127.0	79.0	39.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
160	196.0	178.2	190.3	5.0	7.0	-	-	201.0	127.0	79.0	39.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
165	201.0	183.2	195.3	5.0	7.0	-	-	206.0	127.0	79.0	39.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
170	206.0	188.2	200.3	5.0	7.0	-	-	211.0	127.0	79.0	39.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
175	211.0	193.2	205.3	5.0	7.0	-	-	216.0	127.0	79.0	39.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
180	216.0	207.5	219.3	5.0	7.0	-	-	221.0	135.0	79.0	39.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
185	221.0	212.5	224.3	5.0	7.0	-	-	226.0	135.0	79.0	39.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
190	226.0	217.5	229.3	5.0	7.0	-	-	231.0	135.0	79.0	39.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
195	231.0	222.5	234.3	5.0	7.0	-	-	236.0	135.0	79.0	39.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-
200	236.0	227.5	239.3	5.0	7.0	-	-	241.0	135.0	79.0	39.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	-	-	35.5	22.0	M8	3.5	-

Dimensions in mm.
 

Packaging & Shipping

 

Our Advantages

We have large stock, so our delivery  is very fast.
For example,if products are standarded, the delivery time is one week.
Our company and factory addrss: Ningbo City, Zhejiang  Province,China.
Our city has a large port and an airport, so its transportation is very convenient.

FAQ

Question1: What are the prices of your products?
Answer: For each model, the unit price is listed on the website, but what is displayed on the website is only the average market price. For specific models, you can contact us for further consultation and negotiation.

Question 2: Are you a factory or a trade company?
Answer: We are a factory with top sales for the trade service.
Question 3: What is the minimum order quantity for each order?
Answer: For products of regular models, the minimum order quantity is at least five. We welcome you to test the quality of our products and services through placing trial orders. Looking forward to the long-term cooperation with you.

Question4: What is your company's service tenet?
Answer: Quality first, service upmost. We promises that if there is any problem with the quality of the product, or if the product is damaged during the transportation, our company will be responsible for compensation, regardless of the ordder turnover value.

Question5: Can I try to get a SAMPLE before the order?
Answer:  Sure. Our company will provide you with samples for free, but you will have to pay for the international delivery (freight collect payment).