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 PTFE V-Ring pusher mechanical seals

TG108U is O-Ring pusher construction and single mechanical seals,PTFE V-Ring pusher construction is available in the type. Extend combination material options designed,frequently used in sewage treatment,low corrosive media such as oil and chemical instrudy

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Products Details
  O-Ring pusher construction, available in PTFE V-Ring pusher construction
  Transmission by typical large spring,independent of direction of rotation 
  Single seal, unbalanced.
  Dimensional data conform with ISO3069 standard.
Recommended Applications
  Petrochemical industry and sewage treatment industry
  Sewage pumps and industrial pumps and chemical pumps.
  Other Rotating Equipment.
Operating range

Shaft diameter: d1=20...80mm
Pressure:  p=0...0.6Mpa(87psi)
Temperature: t = -40 °C ...150 °C(-4°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
    Cr-Ni-Mo Sreel (SUS316) G
 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
    PTFE T

  Stainless Steel (SUS304) F 

  Stainless Steel (SUS316) G

 Metal Parts
    Stainless Steel (SUS304) F
    Stainless Steel (SUS316) G
Stationary Seat

Standard Seat:  T5F

Alternatives Seat:T4F 

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.