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 construction mechanical

Single seal,O-ring pusher construction mechanical seals Type TG125 with a wide range of combination material options. It is frequently used in paper, textile printing, Chemical and sewage treatment industry.

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Products Details
  O-ring pusher construction.
  Independent of direction of rotation
  Single seal, unbalanced.
  Low risk of clogging in solids content or viscous liquids
Recommended Applications
  Textile printing, petrochemical industry and sewage treatment industry
  Low solids content or viscous media
  Printing and dyeing pumps、Sewage pumps and industrial pumps
  Other Rotating Equipment.
Operating range

Shaft diameter: d1=20...100mm
Pressure: p=0...1.2Mpa(174psi)
Temperature:  t = -20 °C ...180 °C(-4°F to 356°F)
Sliding velocity: Vg≤25m/s(82ft/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
 Auxiliary Seal 
    Fluorocarbon-Rubber (Viton) V
    Ethylene-Propylene-Diene (EPDM) E
    Nitrile-Butadiene-Rubber (NBR) P
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
 Metal Parts
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
Stationary Seat

Standard Stationary Seat:T4LA

Alternatives Stationary Seat: T20LF

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.