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Ningbo FIT Pump Seals Factory
Ningbo FIT Pump Seals Factory

China Burgmamm MFL85N Metal Bellow Seal manufacturer

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Burgmamm MFL85N Metal Bellow Seal 

Price: 25.0 USD 
Payment Terms: T/T,L/C,WU,Paypal,Money Gram 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: FT85N
Production Capacity: 100 sets per week
Delivery Date: 10 days
Style: Bellow Seal
Brand Name: FT
Seat: SIC
Size: 16mm to 100mm ,0.635" to 4"
Delivery period: 10 days
Means of Transport: Ocean,Land,Air
Packing: carboard box
Standard or Nonstandard: Standard
Material: Metal
Seal face: CAR,SIC
Bellow: SS304 ,AM350
MOQ: 3 sets
packing: white box

Our MFL85N is replacement of burgmann seal ,for unstepped shafts, single and balanced seal, with metal bellows rotating and independent of rotation.

 Burgmann MFL85N Metal Bellow Seal




FIT MFL85N is excellent replacement of burgmann original MFL85N seal, but with more competitive price.


MFL85N is for unstepped shafts, single and balanced seal, with metal bellows rotating and independent of rotation.



MFL85N has many advantages ,like for extreme temperature ranges,No dynamically loaded O-Self cleaning 

effect,Short installation length possible and Pumping screw for highly viscous media available 

(dependent on direction of rotation).


Our factory can make and supply this type seal from shaft diameter 16mm to 100mm, with inch size from

0.63" to 4".


The operating range of MFL85N is as the following:

Externally pressurized: p1 = … 25 bar (363 PSI)

Internally pressurized: p1<120 °C (248 °F) 10 bar (145 PSI) 

p1<220 °C (428 °F) 5 bar (72 PSI)

Temperature: t = -40 °C … +220 °C (-40 °F … 428) °F,

Stationary seat lock necessary.Sliding velocity: vg = 20 m/s (66 ft/s)


About the material of our MFL85N metal bellow seal, we can supply Carbon graphite antimony impregnated

(A)& Silicon carbide (Q12) Seal face and Silicon carbide (Q1) Seat. )Inconel® 718 hardened (M6)

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Metal bellows seals have many advantages over common pusher seals. The obvious advantages include:


- No dynamic o-ring eliminating the possiblity of hang-ups or shaft wear.


- Hydraulically balanced metal bellows allow the seal to handle more pressure without heat build up.


- Self Cleaning. Centrifugal force throws solids away from the seal face - Trim design allow fit into tight seal boxes


- Even face loading


- No Springs to clog


Most often metal bellows seals are thought of as High Temperature seals. But metal bellows seals are often effective in a wide range of other seal applications. The most common of these is chemical, general water pump applications. For many years an inexpensive form of metal bellows seals have been used very successfully in the waste water / sewage industry and in the agricultural fields pumping irrigation water. These seals were generally made of a formed bellows rather than a welded bellows. Welded bellows seals are much stronger and have superior flex and recovery characteristics which are more ideal to holding seal faces together but cost more to manufacture. Welded metal bellows seals are less prone to metal fatigue .



Ms. Suzy
skype Ms. Suzy
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Tel: 86-574-87155562
Fax: 86-574-87155561
Mobile: 135 6659 8487
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Company Info

Ningbo FIT Pump Seals Factory [China (Mainland)]


Business Type:Manufacturer, Trading Company, Distributor/Wholesaler, Service
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

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