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


O-Ring pusher mechanical seals

O-Ring pusher construction and single mechanical seal type TG113 allows short axial installation length,with easy to install and reliable transmission characteristic. It is ideal for use in General corrosion applications such as chemical pumps, sewage pumps and industrial pumps.

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Products Details
  O-Ring pusher construction
  Two forms in the Spring adaptor (Anti-rotating Pin and set screw). 
  Single seal,independent of direction of rotation.
  Low risk of clogging in solids content or viscous liquids
Recommended Applications
  Petrochemical industry and sewage treatment industry
  Low solids content or viscous media
  Sewage pumps, chemical pumps, screw pumps 
  Other Rotating Equipment.
Operating range

Shaft diameter: d1=20...80mm
Pressure: p=0...1.0Mpa(145psi)
Temperature:  t = -40 °C ...150 °C(-40°F to 302°F)
Sliding velocity: Vg≤10m/s(32.8ft/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
    Tungsten carbide W1
 Stationary Seat
    Silicon carbide (RBSIC) O
    Carbon graphite resin impregnated Ak
    Tungsten carbide W1
 Auxiliary Seal 
    Fluorocarbon-Rubber (Viton) V
    Ethylene-Propylene-Diene (EPDM) E
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
 Metal Parts
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
Stationary Seat

Standard Seat: T5A

Alternatives Seat:T4A  

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.