| 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
• Metal bellows
(2)Advantages
• For extreme cold temperature ranges
• No dynamically loaded O-Ring
• Self cleaning effect
• Short installation length possible
• Pumping screw for highly viscous media available
(dependent on direction of rotation).
(3)Operating range (see note on page 1)
Shaft diameter: d1 = 24 ... 150 mm (0.94" ... 6")
Externally pressurized: p1 = ... 25 bar (363 PSI)
Internally pressurized: p1 = 10 bar (145 PSI )
Stationary seat lock necessary
Temperature: t = -100 °C ... +100 °C(-148 °F ... +212 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
(4)Materials
Seal face: Carbon graphite antimony impregnated (A),
Silicon carbide (Q12)
Seat: Silicon carbide (Q1)
Bellows: Inconel® 718 hardened (M6),
Hastelloy® C-276 (M5)
Metal parts: CrNiMo steel (G)
Hastelloy® C-4 (M)
(5)Recommended applications
• Refining technology
• Power plant technology
• Chemical industry
• Cold media
• Highly viscous media
• Pumps
• Special rotating equipment
(6)Item Part no. to DIN 24250 Description
1.1 472/481 Seal face with
bellows unit
1.2 410 Sealing ring
1.3 474 Drive collar
1.4 Socket head screw
1.5 904 Set screw
2 475 Seat
3 412 Sealing ring
(7)Product variant
MFLCT90
Shaft diameter: d1 = 20 ... 150 mm (0.64" ... 6")
Internally pressurized: p1 = ... 16 bar (232 PSI)
Externally pressurized: p1 = 10 bar (145 PSI),
stationary seat lock necessary
Temperature: t = -100 °C ... +100 °C(-148 °F ... +212 °F),
Sliding velocity: vg = 20 m/s (66 ft/s)
Dimensions in mm
| d1 | d3 | d32) | d6 | d7 | d8 | L1 | L3 | L5 | L6 | L7 | L8 | L9 | f | k | mx |
| 16 | 38.0 | - | 29.0 | 35.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M5 |
| 18 | 40.0 | - | 31.0 | 37.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M5 |
| 20 | 42.0 | - | 34.0 | 40.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M5 |
| 22 | 44.0 | - | 37.0 | 43.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M5 |
| 24 | 46.0 | 49.8 | 37.0 | 43.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M5 |
| 25 | 47.0 | 51.7 | 39.0 | 45.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M5 |
| 28 | 50.0 | 54.5 | 42.0 | 48.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M6 |
| 30 | 52.0 | 56.6 | 44.0 | 50.0 | 3.0 | 58.0 | 46.5 | 2.0 | 5.0 | 9.0 | 19.5 | 11.5 | 5.0 | 5.0 | M6 |
| 32 | 54.0 | 59.5 | 49.0 | 56.0 | 4.0 | 60.5 | 46.5 | 2.0 | 6.0 | 9.0 | 22.0 | 14.0 | 5.0 | 5.0 | M6 |
| 33 | 55.0 | 59.5 | 49.0 | 56.0 | 4.0 | 60.5 | 46.5 | 2.0 | 6.0 | 9.0 | 22.0 | 14.0 | 5.0 | 5.0 | M6 |
| 35 | 57.0 | 62.5 | 51.0 | 58.0 | 4.0 | 60.5 | 46.5 | 2.0 | 6.0 | 9.0 | 22.0 | 14.0 | 5.0 | 5.0 | M6 |
| 38 | 60.0 | 65.7 | 54.0 | 61.0 | 4.0 | 60.5 | 46.5 | 2.0 | 6.0 | 9.0 | 22.0 | 14.0 | 5.0 | 5.0 | M6 |
| 40 | 66.0 | 65.7 | 56.0 | 63.0 | 4.0 | 61.5 | 47.5 | 2.0 | 6.0 | 9.0 | 22.0 | 14.0 | 5.0 | 6.0 | M6 |
| 43 | 69.0 | 68.6 | 59.0 | 66.0 | 4.0 | 61.5 | 47.5 | 2.0 | 6.0 | 9.0 | 22.0 | 14.0 | 5.0 | 6.0 | M6 |
| 45 | 71.0 | 71.5 | 62.0 | 70.0 | 4.0 | 62.5 | 47.5 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 5.0 | 6.0 | M6 |
| 48 | 74.0 | 75.1 | 65.0 | 73.0 | 4.0 | 62.5 | 47.5 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 5.0 | 6.0 | M6 |
| 50 | 76.0 | 76.1 | 67.0 | 75.0 | 4.0 | 62.5 | 47.5 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 5.0 | 6.0 | M6 |
| 53 | 79.0 | 80.8 | 70.0 | 78.0 | 4.0 | 62.5 | 47.5 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 5.0 | 6.0 | M6 |
| 55 | 81.0 | 80.8 | 72.0 | 80.0 | 4.0 | 62.5 | 47.5 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 5.0 | 6.0 | M6 |
| 58 | 85.0 | 84.0 | 75.0 | 83.0 | 4.0 | 68.0 | 53.0 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 5.0 | 6.0 | M6 |
| 60 | 87.0 | 92.3 | 77.0 | 85.0 | 4.0 | 68.0 | 53.0 | 2.5 | 6.0 | 9.0 | 23.0 | 15.0 | 6.0 | 6.0 | M8 |
| 63 | 90.0 | 95.5 | 81.0 | 90.0 | 4.0 | 71.0 | 53.0 | 2.5 | 7.0 | 9.0 | 26.0 | 18.0 | 6.0 | 6.0 | M8 |
| 65 | 92.0 | 95.5 | 83.0 | 92.0 | 4.0 | 71.0 | 53.0 | 2.5 | 7.0 | 9.0 | 26.0 | 18.0 | 6.0 | 6.0 | M8 |
| 68 | 95.0 | 101.3 | 88.0 | 97.0 | 4.0 | 71.0 | 53.0 | 2.5 | 7.0 | 9.0 | 26.0 | 18.0 | 6.0 | 6.0 | M8 |
| 70 | 97.0 | 101.3 | 88.0 | 97.0 | 4.0 | 71.0 | 53.0 | 2.5 | 7.0 | 9.0 | 26.0 | 18.0 | 6.0 | 6.0 | M8 |
| 75 | 102.0 | 105.0 | 95.0 | 105.0 | 4.0 | 71.0 | 52.8 | 3.0 | 7.0 | 9.0 | 26.2 | 18.2 | 6.0 | 6.0 | M8 |
| 80 | 107.0 | 110.6 | 100.0 | 110.0 | 4.0 | 71.0 | 52.8 | 3.0 | 7.0 | 9.0 | 26.2 | 18.2 | 6.0 | 6.0 | M8 |
| 85 | 112.0 | 117.0 | 105.0 | 115.0 | 4.0 | 71.0 | 52.8 | 3.0 | 7.0 | 9.0 | 26.2 | 18.2 | 6.0 | 6.0 | M8 |
| 90 | 117.0 | 120.2 | 110.0 | 120.0 | 4.0 | 71.0 | 53.8 | 3.0 | 7.0 | 9.0 | 25.2 | 17.2 | 6.0 | 6.0 | M8 |
| 95 | 122.0 | 125.2 | 115.0 | 125.0 | 4.0 | 71.0 | 53.8 | 3.0 | 7.0 | 9.0 | 25.2 | 17.2 | 6.0 | 6.0 | M8 |
| 100 | 127.0 | 130.2 | 122.2 | 134.3 | 5.0 | 74.0 | 54.0 | 3.0 | 9.0 | 11.0 | 30.0 | 20.0 | 6.0 | 6.0 | M8 |
| 2) d3 executed in Hastelloy® | |||||||||||||||
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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