Mechanical Seal Burgmann BT-FN For blower pump

Temperature -20℃ to +150℃
Speed ≤15m/s
Pressure ≤1Mpa
Material Q2.U2,B,V1,P,E,V,F,G


The mechanical seals manufactured for diving pump and circulating pump. A vertical pump is the most susceptible since the mechanical seal is positioned on prime. If you have improper venting, air can get trapped around the seal and won't be in a position to evacuate the stuffing box. The mechanical seal will quickly fail if the pump continues to run in this condition. The catridge design and style modifications none of the functional elements of the fundamental seal. In a catridge seal, all products are containerized and preset to functioning dimensions. They eliminate require to scribe lines and make essential measurements for the duration of seal assembly. Such seal installation requires only tightening of the gland bolts.

Mechanical Seal Burgmann BT-FN For blower pump

Type:O-Ring Mechanical Seal

Replacement:Burgmann BT-FN/BT-FN.NU,Roten3/UNITEN 3,AES T04/T04D,Vulcan13/13 DIN,Flowserve43/43D,Latty T901/901D

Temperature:-20℃ to +150℃




The BT-FN combines a spring loaded ceramic seal  face and the traditional pusher mechanical seals. 

The competitive price and the wide range of applications have made the BT-FN seal a success. The seal is produced with punched metal parts that allow an economical design. 

BT-FN mechanical seals are also the ideal solution for light chemicals media applications. To ensure the best reliable performance, we recommend a material combination of hard material sliding faces and proper elastomer O-Rings.

O-Ring Mechanical Seal Size


• Single pusher-type seal

• Unbalanced

• Conical spring

• Dependent on direction of rotation

Operating range:

Shaft diameter: d1= 10…40mm (0.39"…1.57")

Pressure: p1*= 12 (16)bar (174 (232) PSI)

Temperature: t* = -35 °C… +180 °C (-31 °F…+356 °F)

Sliding velocity: vg = 15m/s (49 ft/s)

* Dependent on medium, size and material


Seal face: Steatite (X), Aluminium oxide (V), 

Silicon carbide (Q1, Q6), Tungsten carbide(U1)

Seat: Carbon graphite antimony impregnated

(A), Carbon graphite resin impregnated (B), 

Silicon carbide(Q1, Q6), Tungsten carbide (U1)

Elastomers: NBR (P), EPDM (E), FKM (V), FFKM (K)

Metal parts: CrNi steel 1.4301 (F), CrNiMosteel 1.4401 (G)

Recommended applications:

• Building services industry

• Household appliances

• Centrifugal pumps

• Clean water pumps

• Pumps for domestic applications and gardening



• W270




• DM 174/04


Item Description:

1 Seal face

2 Stationary seat

3, 3a, 3b O-Ring

4 Spring

5 Collar

Bt-fn mechanical seal is also an ideal solution for light chemical medium application. To ensure the best reliable performance, we recommend using a combination of hard material sliding surfaces and appropriate elastomer O-rings. It feature as Single pusher-type seal, Unbalanced, Conical spring and Dependent on direction of rotation, etc. We recommend to use these products on Process industry, Oil and gas industry, Refining technology, Chemical industry, Power plant technology, Pulp and paper industry, Water and waste water technology, Mining industry, Sugar industry and Cement industry, etc. EagleBurgmann is your best choice.

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