20 H74-D 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.: 20 H74-D
• Temperature: High Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Type: Custom-Made, TS
• Balance: Balanced
• Payment Method: T/T, Western Union, L/C etc
• Replace: Bogmann Seals
• Export Port: Ningbo Port, Shanghai Port
• Products Packaging: White Box
• Min Order Qty: 5 Pcs
• Transport Package: Carton Packing
• Specification: Diameter Size 14-200mm
• 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 stepped shafts
• Dual seal
• Balanced
• Rotating multiple springs
• Independent of direction of rotation
• Seal concept based on the H7 range
• Variant with pumping screw available (H74F-D)

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

(3)Operating range (see note on page 1)
Shaft diameter: d1 = 14 ... 200 mm (0.55" ... 7.87")
Pressure: 
p1 = 80 bar (1,160 PSI) for d1 = 14 ... 100 mm,
p1 = 25 bar (363 PSI) for d1 = 100 ... 200 mm,
p1 = 16 bar (232 PSI) for d1 > 200 mm
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: Silicon carbide (Q1, Q2), Carbon graphite 
antimony impregnated (A), Aluminium oxide (V), 
Special cast CrMo steel (S)
Seat G9: Carbon graphite antimony impregnated (A), 
Carbon graphite resin impregnated (B), Silicon carbide 
(Q1*, Q2*) 
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face in S

(5)Standards and approvals
• EN 12756

(6)Item          Part no. to 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 pumps

(8)Seat alternatives

(9)Torque transmission

d12 ≥ 105 mm Torque transmission by 4 set screws with cone point. Offset: 90°

(10)Product variant
H74F-D
Dimensions, items and descriptions
as for H74-D, but with pumping screw (Item no. 1.4). 
Dependent on direction of rotation.

H74F-D

 

Detailed Photos

 

Product Structure Size

Dimensions in mm 

d1	d2	d3	d6	d7	d8	d11	d12	ds	L1	L2	L3	L4	L5	L6	L7	L8	L9	L10	L12	L14	L15	L16	L28	L31	Mx	R
14	18.0	33.0	21.0	25.0	3.0	24.0	30.0	-	73.0	18.0	53.0	26.5	1.5	4.0	8.5	17.5	10.0	7.5	6.5	5.6	1.5	5.0	6.6	17.0	M5	1.2
16	20.0	35.0	23.0	27.0	3.0	29.5	35.0	-	73.0	18.0	53.0	26.5	1.5	4.0	8.5	17.5	10.0	7.5	8.5	7.5	1.5	5.0	6.6	17.0	M5	1.5
18	22.0	37.0	27.0	33.0	3.0	29.5	35.0	42.0	76.0	20.0	53.0	26.5	2.0	5.0	9.0	19.5	11.5	8.5	9.0	8.0	1.5	5.0	7.5	17.0	M5	1.5
20	24.0	39.0	29.0	35.0	3.0	32.0	38.0	44.0	76.0	20.0	53.0	26.5	2.0	5.0	9.0	19.5	11.5	8.5	8.5	7.5	1.5	5.0	7.5	17.0	M5	1.5
22	26.0	41.0	31.0	37.0	3.0	32.0	38.0	45.0	76.0	20.0	53.0	26.5	2.0	5.0	9.0	19.5	11.5	8.5	8.5	7.5	1.5	5.0	7.5	17.0	M5	1.5
24	28.0	43.0	33.0	39.0	3.0	36.0	42.0	47.0	77.0	20.0	54.0	27.0	2.0	5.0	9.0	19.5	11.5	8.5	8.5	7.5	1.5	5.0	7.5	17.5	M6	1.5
25	30.0	45.0	34.0	40.0	3.0	39.2	45.0	49.0	77.0	20.0	54.0	27.0	2.0	5.0	9.0	19.5	11.5	8.5	8.5	7.5	1.5	5.0	7.5	17.5	M6	1.5
28	33.0	48.0	37.0	43.0	3.0	42.2	48.0	51.0	77.0	20.0	54.0	27.0	2.0	5.0	9.0	19.5	11.5	8.5	10.0	9.0	1.5	5.0	7.5	17.5	M6	1.5
30	35.0	50.0	39.0	45.0	3.0	44.2	50.0	54.0	77.0	20.0	54.0	27.0	2.0	5.0	9.0	19.5	11.5	8.5	11.5	10.5	1.5	5.0	7.5	17.5	M6	1.5
32	38.0	55.0	42.0	48.0	3.0	46.2	52.0	59.0	79.0	20.0	56.0	28.0	2.0	5.0	9.0	19.5	11.5	8.5	11.5	10.5	1.5	5.0	7.5	18.5	M6	1.5
33	38.0	55.0	42.0	48.0	3.0	49.2	55.0	59.0	79.0	20.0	56.0	28.0	2.0	5.0	9.0	19.5	11.5	8.5	12.0	10.5	1.5	5.0	7.5	18.5	M6	1.5
35	40.0	57.0	44.0	50.0	3.0	52.2	58.0	61.0	80.0	20.0	57.0	28.5	2.0	5.0	9.0	19.5	11.5	8.5	12.0	11.0	1.5	5.0	7.5	19.0	M6	1.5
38	43.0	60.0	49.0	56.0	4.0	53.3	62.0	65.0	85.0	23.0	57.0	28.5	2.0	6.0	9.0	22.0	14.0	10.0	11.3	10.3	2.0	6.0	9.0	19.0	M6	1.5
40	45.0	62.0	51.0	58.0	4.0	55.3	64.0	66.0	85.0	23.0	57.0	28.5	2.0	6.0	9.0	22.0	14.0	10.0	11.8	10.8	2.0	6.0	9.0	19.0	M6	1.5
43	48.0	65.0	54.0	61.0	4.0	59.7	68.4	69.0	85.0	23.0	57.0	28.5	2.0	6.0	9.0	22.0	14.0	10.0	13.2	12.0	2.0	6.0	9.0	19.0	M6	2.5
45	50.0	67.0	56.0	63.0	4.0	60.8	69.3	71.0	84.0	23.0	56.0	28.0	2.0	6.0	9.0	22.0	14.0	10.0	12.8	11.6	2.0	6.0	9.0	19.5	M6	2.5
48	53.0	70.0	59.0	66.0	4.0	63.8	72.3	75.0	84.0	23.0	56.0	28.0	2.0	6.0	9.0	22.0	14.0	10.0	12.8	11.6	2.0	6.0	9.0	19.5	M6	2.5
50	55.0	72.0	62.0	70.0	4.0	66.5	75.4	76.0	93.0	25.0	63.0	31.5	2.5	6.0	9.0	23.0	15.0	10.5	12.8	11.6	2.0	6.0	9.5	19.5	M6	2.5
53	58.0	79.0	65.0	73.0	4.0	69.5	78.4	83.0	97.0	25.0	67.0	33.5	2.5	6.0	9.0	23.0	15.0	12.0	13.5	12.3	2.0	6.0	11.0	23.5	M8	2.5
55	60.0	81.0	67.0	75.0	4.0	71.5	80.4	85.0	97.0	25.0	67.0	33.5	2.5	6.0	9.0	23.0	15.0	12.0	14.5	13.3	2.0	6.0	11.0	23.5	M8	2.5
58	63.0	84.0	70.0	78.0	4.0	74.5	83.4	88.0	104.0	25.0	74.0	37.0	2.5	6.0	9.0	23.0	15.0	12.0	14.5	13.3	2.0	6.0	11.0	24.5	M8	2.5
60	65.0	86.0	72.0	80.0	4.0	76.5	85.4	95.0	104.0	25.0	74.0	37.0	2.5	6.0	9.0	23.0	15.0	12.0	14.5	13.3	2.0	6.0	11.0	24.5	M8	2.5
63	68.0	89.0	75.0	83.0	4.0	82.7	91.5	93.0	109.0	25.0	79.0	39.5	2.5	6.0	9.0	23.0	15.0	12.0	14.2	13.3	2.0	6.0	11.0	24.5	M8	2.5
65	70.0	91.0	77.0	85.0	4.0	83.0	92.0	95.0	98.0	25.0	68.0	34.0	2.5	6.0	9.0	23.0	15.0	12.0	14.2	13.0	2.0	6.0	11.0	23.5	M8	2.5
70	75.0	99.0	83.0	92.0	4.0	90.2	99.0	105.0	112.5	28.0	76.4	38.2	2.5	7.0	9.0	26.0	18.0	12.5	14.9	13.7	2.0	6.0	11.3	25.5	M8	2.5
75	80.0	104.0	88.0	97.0	4.0	95.2	104.0	109.0	112.5	28.0	76.4	38.2	2.5	7.0	9.0	26.0	18.0	12.5	14.2	13.0	2.0	6.0	11.3	25.5	M8	2.5
80	85.0	109.0	95.0	105.0	4.0	100.2	109.0	114.0	112.5	28.0	76.0	38.0	3.0	7.0	9.0	26.2	18.2	12.5	15.2	14.0	2.0	6.0	11.3	25.0	M8	2.5
85	90.0	114.0	100.0	110.0	4.0	105.2	114.0	119.0	112.5	28.0	76.0	38.0	3.0	7.0	9.0	26.2	18.2	13.0	16.2	15.0	2.0	6.0	12.0	25.5	M8	2.5
90	95.0	119.0	105.0	115.0	4.0	111.6	120.3	124.0	112.5	28.0	76.0	38.0	3.0	7.0	9.0	26.2	18.2	15.0	16.0	14.8	2.0	6.0	14.0	25.0	M8	2.5
95	100.0	124.0	110.0	120.0	4.0	114.5	123.3	129.0	110.5	28.0	76.0	38.0	3.0	7.0	9.0	25.2	17.2	15.0	16.0	14.8	2.0	6.0	14.0	25.0	M8	2.5
100	105.0	129.0	115.0	125.0	4.0	-	-	134.0	110.5	28.0	76.0	38.0	3.0	7.0	9.0	25.2	17.2	15.0	17.0	15.8	-	-	14.0	25.5	M8	2.5
105	115.0	148.0	122.2	134.3	5.0	-	-	153.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	15.0	17.0	15.8	-	-	14.0	31.5	M8	2.5
110	120.0	153.0	128.2	140.3	5.0	-	-	158.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
115	125.0	158.0	136.2	148.3	5.0	-	-	163.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
120	130.0	163.0	138.2	150.3	5.0	-	-	168.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
125	135.0	168.0	142.2	154.3	5.0	-	-	173.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
130	140.0	173.0	146.2	158.3	5.0	-	-	178.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
135	145.0	178.0	152.2	164.3	5.0	-	-	183.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
140	150.0	183.0	156.2	168.3	5.0	-	-	188.0	122.0	32.0	82.0	41.0	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	31.5	M8	-
145	155.0	191.0	161.2	173.3	5.0	-	-	196.0	133.0	34.0	93.0	46.5	2.0	10.0	-	30.0	20.0	-	-	-	-	-	-	35.5	M8	-
150	160.0	196.0	168.2	180.3	5.0	-	-	201.0	137.0	36.0	93.0	46.5	2.0	10.0	-	32.0	22.0	-	-	-	-	-	-	35.5	M8	-
155	165.0	201.0	173.2	185.3	5.0	-	-	206.0	141.0	38.0	93.0	46.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	35.5	M8	-
160	170.0	206.0	178.2	190.3	5.0	-	-	211.0	141.0	38.0	93.0	46.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	35.5	M8	-
165	175.0	211.0	183.2	195.3	5.0	-	-	216.0	141.0	38.0	93.0	46.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	35.5	M8	-
170	180.0	216.0	188.2	200.3	5.0	-	-	221.0	141.0	38.0	93.0	46.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	35.5	M8	-
175	185.0	221.0	193.2	205.3	5.0	-	-	226.0	141.0	38.0	93.0	46.5	2.0	12.0	-	34.0	24.0	-	-	-	-	-	-	35.5	M8	-
180	190.0	226.0	207.5	219.3	5.0	-	-	231.0	149.0	42.0	93.0	46.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	35.5	M8	-
185	195.0	231.0	212.5	224.3	5.0	-	-	236.0	149.0	42.0	93.0	46.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	35.5	M8	-
190	200.0	236.0	217.5	229.3	5.0	-	-	241.0	149.0	42.0	93.0	46.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	35.5	M8	-
195	205.0	245.0	222.5	234.3	5.0	-	-	250.0	151.0	43.0	95.0	47.5	2.0	12.0	-	38.0	28.0	-	-	-	-	-	-	-	M10	-
200	210.0	250.0	227.5	239.3	5.0	-	-	255.0	151.0	43.0	95.0	47.5	2.0	12.0	-	38.0	28.0	-	-	-	-		-	-	M10	-

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).