O-ring Pusher seals use a sliding secondary seal and in this design the O-ring is pushed along the outside diameter of the equipment shaft or sleeve. The O-ring retains the sealed liquid and follows along the shaft to compensate for face wear.


Product variants


EagleBurgmann Type BT-FN Replacement

TNG mechanical seal type TG155 with conical spring and O-ring pusher construction, the metal parts produced by Stamping. competitive price and wide range of application have made the TG155 a mass-production seals.

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Products Details
  Conical spring,unbalanced,O-ring pusher construction 
  Torque transmission via conical spring, independent of direction of rotation.
  Stamping construction in the metal parts
Recommended Applications
  Centrifugal pump and clean water pump 
  Other Rotating Equipment.
Operating range

Shaft diameter: d1=10...40mm
Pressure:  p=0...1.4Mpa(203psi)
Temperature: t = -40 °C ...180 °C(-40°F to 356°F)
Sliding velocity:  Vg≤15m/s(49.2ft/m)

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

Product Structure
Combination Materials
 Rotary Face 
    Silicon carbide (RBSIC) O
    Aluminium Oxide Ceramic B
 Stationary Seat 
    Hot-Pressing Carbon A
    Carbon graphite resin impregnated Ak
    Silicon carbide (RBSIC) 
 Auxiliary Seal 
    Nitrile-Butadiene-Rubber (NBR) P
    Fluorocarbon-Rubber (Viton) V
    Ethylene-Propylene-Diene (EPDM) E
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
    Left rotation: L Right rotation: R
 Metal Parts
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
Stationary Seat

Standard Stationary SeatT8RN 

T8RN equivalent to Burgmann RN

Alternatives Stationary SeatT3RN  

T3RN equivalent to Burgmann RN

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WenZhou TianGu Seal Co., Ltd was founded in 1982, is located in Wenzhou City, Zhejiang Province Economic and Technological Development Zone, China Hydraulics Pneumatics & Seals Industry Association, in the mechanical seal product design, manufacturing and sales of businesses.