MFL85N

Request product

MFL85N

MFL85N
Request product
Item Part no.
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 (G9)
3 412.2 O-Ring

MFL85N

Features

  • For unstepped shafts
  • Single seal
  • Balanced
  • Independent of direction of rotation
  • Metal bellows rotating

Advantages

  • For extreme 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).

Operating range

Shaft diameter:
d1 = 16 … 100 mm (0.63" … 4“)
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)

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), Duplex (G1), Hastelloy® C-4 (M)

Standards and approvals

  • EN 12756


Product variants

MFL90N
Shaft diameter:
d1 = 20 … 100 mm (0.79" … 4“)
Internally pressurized:
p1 = … 16 bar (232 PSI),
stationary seat lock necessary.
Externally pressurized:
p1 = 10 bar (145 PSI)
Temperature:
t = -40 °C … +220 °C (-40 °F … +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
MFL85P / MFL90P
Version with pumping ring. Dependent on direction of rotation. Can be retrofitted.
MFL85F
Dimensions, items and description as for MFL85N, but with pumping screw (item no. 1.4). Dependent on direction of rotation. The pumping screw can be retrofitted.

Similar products

LY9DSTT

LY9DSTT

  • API 682 Category 2 and 3, Type C, Arrangement 3 seal
  • Dual seal in face-to-face arrangement
  • Balanced
  • Cartridge unit
  • Stationary metal bellows
  • Shrink fitted seal rings and solid mating rings

Read more

LY9DZTT

LY9DZTT

  • API 682 Category 2 and 3, Type C, Arrangement 2 and 3 seal
  • Dual seal in face-to-back arrangement
  • Balanced
  • Cartridge unit
  • Stationary metal bellows
  • Shrink fitted seal rings and solid mating rings

Read more

LY9TC

LY9TC

  • API 682 Category 2 and 3, Type C, Arrangement 1 seal
  • Single seal
  • Balanced
  • Cartridge unit
  • Stationary metal bellows
  • Shrink fitted seal ring and solid mating ring

Read more

Contact

Inquire about individual solutions

We develop and produce customer-specific special and individual solutions for every application.

Inquire now Discover reference projects
Back to the overview
The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

EagleBurgmann WORLDWIDE