| Customization: | Available |
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| Structure: | Single End |
| Pressure: | High Pressure Mechanical Seals |
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(1)Features
For unstepped shafts
Rotating bellows
Single seal
Balanced
Independent of direction of rotation
Roller bellows
(2)Advantages
For extreme temperature ranges
No dynamically loaded O-Ring
Very good self cleaning effect
Suitable for low-end sterile applications
(3)Operating range (see note on page 1)
Shaft diameter: d1 = 14 ... 100 mm (0.55" ... 3.94")
Temperature: t = -40 °C ... +220 °C (-40 °F ... +428 °F)
Pressure: p = 16 bar (232 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement: ±0.5 mm
(4)Materials
Bellows: Hastelloy® C-276 (M5)
Seal face: Silicon carbide (Q12),
Carbon graphite resin impregnated (B),
Carbon graphite antimony impregnated (A)
Seat: Silicon carbide (Q1)
Metal parts: CrNiMo steel (G1)
(5)Standards and approvals
EN 12756
(6)Recommended applications
Water and waste water technology
Refining technology
Power plant technology
Chemical industry
Pharmaceutical industry
Food an beverage industry
Hot media
Cold media
Highly viscous media
Pumps
Special rotating equipment
(7)Item Part no. to DIN 24250 Description
1.1 472/481 Seal face
with bellows unit
1.2 412.1 O-Ring
1.3 904 Set screw
2 475 Seat (G16)
3 412.2 O-Ring
(8)Product variant
MF90N
Shaft diameter: d1 = 14 ... 100 mm (0.55" ... 3.94")
Temperature: t = -40 °C ... +220 °C (- 40 °F ... +428 °F)
Internally pressurized: p = 10 bar (145 PSI),
stationary seat lock necessary.
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement: ±0.5 mm
Dimensions in mm
| d1 | d3 | d6 | d7 | d8 | L1k | L3 | L5 | L6 | L7 | L18 |
| 14 | 24.0 | 21.0 | 25.0 | 3.0 | 35.0 | 30.5 | 1.5 | 4.0 | 8.5 | 15.0 |
| 16 | 26.0 | 23.0 | 27.0 | 3.0 | 35.0 | 29.5 | 1.5 | 4.0 | 8.5 | 15.0 |
| 18 | 32.0 | 27.0 | 33.0 | 3.0 | 37.5 | 30.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 20 | 34.0 | 29.0 | 35.0 | 3.0 | 37.5 | 30.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 22 | 36.0 | 31.0 | 37.0 | 3.0 | 37.5 | 30.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 24 | 39.0 | 33.0 | 39.0 | 3.0 | 40.0 | 33.0 | 2.0 | 5.0 | 9.0 | 15.0 |
| 25 | 39.0 | 34.0 | 40.0 | 3.0 | 40.0 | 33.0 | 2.0 | 5.0 | 9.0 | 15.0 |
| 28 | 42.0 | 37.0 | 43.0 | 3.0 | 42.5 | 35.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 30 | 44.0 | 39.0 | 45.0 | 3.0 | 42.5 | 35.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 32 | 46.0 | 42.0 | 48.0 | 3.0 | 42.5 | 35.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 33 | 47.0 | 42.0 | 48.0 | 3.0 | 42.5 | 35.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 35 | 49.0 | 44.0 | 50.0 | 3.0 | 42.5 | 35.5 | 2.0 | 5.0 | 9.0 | 15.0 |
| 38 | 54.0 | 49.0 | 56.0 | 4.0 | 45.0 | 37.0 | 2.0 | 6.0 | 9.0 | 16.0 |
| 40 | 56.0 | 51.0 | 58.0 | 4.0 | 45.0 | 37.0 | 2.0 | 6.0 | 9.0 | 16.0 |
| 43 | 59.0 | 54.0 | 61.0 | 4.0 | 45.0 | 37.0 | 2.0 | 6.0 | 9.0 | 16.0 |
| 45 | 61.0 | 56.0 | 63.0 | 4.0 | 45.0 | 37.0 | 2.0 | 6.0 | 9.0 | 16.0 |
| 48 | 64.0 | 59.0 | 66.0 | 4.0 | 45.0 | 37.0 | 2.0 | 6.0 | 9.0 | 16.0 |
| 50 | 66.0 | 62.0 | 70.0 | 4.0 | 47.5 | 38.0 | 2.5 | 6.0 | 9.0 | 17.0 |
| 53 | 69.0 | 65.0 | 73.0 | 4.0 | 47.5 | 38.0 | 2.5 | 6.0 | 9.0 | 17.0 |
| 55 | 71.0 | 67.0 | 75.0 | 4.0 | 47.5 | 38.0 | 2.5 | 6.0 | 9.0 | 17.0 |
| 58 | 78.0 | 70.0 | 78.0 | 4.0 | 52.5 | 42.0 | 2.5 | 6.0 | 9.0 | 18.0 |
| 60 | 80.0 | 72.0 | 80.0 | 4.0 | 52.5 | 42.0 | 2.5 | 6.0 | 9.0 | 18.0 |
| 63 | 83.0 | 75.0 | 83.0 | 4.0 | 52.5 | 42.0 | 2.5 | 6.0 | 9.0 | 18.0 |
| 65 | 85.0 | 77.0 | 85.0 | 4.0 | 52.5 | 42.0 | 2.5 | 6.0 | 9.0 | 18.0 |
| 68 | 87.0 | 81.0 | 90.0 | 4.0 | 52.5 | 41.5 | 2.5 | 7.0 | 9.0 | 18.5 |
| 70 | 90.0 | 83.0 | 92.0 | 4.0 | 60.0 | 48.5 | 2.5 | 7.0 | 9.0 | 19.0 |
| 75 | 99.0 | 88.0 | 97.0 | 4.0 | 60.0 | 48.5 | 2.5 | 7.0 | 9.0 | 19.0 |
| 80 | 104.0 | 95.0 | 105.0 | 4.0 | 60.0 | 48.5 | 3.0 | 7.0 | 9.0 | 19.0 |
| 85 | 109.0 | 100.0 | 110.0 | 4.0 | 60.0 | 48.5 | 3.0 | 7.0 | 9.0 | 19.0 |
| 90 | 114.0 | 105.0 | 115.0 | 4.0 | 65.0 | 52.0 | 3.0 | 7.0 | 9.0 | 20.5 |
| 95 | 119.0 | 110.0 | 120.0 | 4.0 | 65.0 | 52.0 | 3.0 | 7.0 | 9.0 | 20.5 |
| 100 | 124.0 | 115.0 | 125.0 | 4.0 | 65.0 | 52.0 | 3.0 | 7.0 | 9.0 | 20.5 |
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.
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).
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