Type 685

EagleBurgmann Type MFL85N series replacement

Welded metal bellows mechanical seals Type 685 is a high parameter seal, used in corrosive media and large friction coefficient media. With good floatability and random compensatory, widely used in petrochemical industry, sewage treatment industry and paper industry.

Features
  Welded metal bellows construction,Balanced, Independent of direction of rotation
  Bellows not only used as elastic component, but also has good torque transmission effect
  No dynamically loaded O-Ring
  Dimensional data conform with DIN24960 standard
 
 
Stationary Seat

Standard Seat:T4G9

T4G9 equivalent to Burgmann G9 

 

 
 
Recommended Applications
  Refining technology, Oil and gas industry
  Process industry
  Pumps
  Special Rotating Equipment.
Operating range

Shaft diameter:  d1=18…100mm(0.750” …4.000”)
Pressure:  p=0…2.5Mpa(362.5psi)
Temperature:  t = -20 °C …220 °C(-4°F to 428°F)
Sliding velocity: Vg≤15m/s(49.2ft/m)

 

Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials

Detailed parameters

Frequently Asked Question

Yes. The address is in Wenzhou, Zhejiang. We have been committed to provide professional solutions for the
printing and Machinery manufacturing industry for 15 years.

Yes, you can get free samples.
If the sample need to be customized, it should be paid for the sample.

We will offer you the best price quote after we get the product specifications such as size, material, shape, color, quantity,
surface finishing, etc.

Quality is priority. we always attach great importance to quality controlling

  from the very beginning to the very end. Our factory has gained ISO9001 

  authentication.

7-15 days after confirm all details.

By express like DHL, UPS, TNT, FedEx etc, about 3-7 days. By sea about 15-35 days.

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