Elastomer bellows mechanical seal is indentified by the use of an elastomer bellows or diaphragm for the secondary sealing member. Elatomer bellows seal units require a positive abutment at the back of the bellows or spring, positioned so as to give the correct seal working length


Product variants


Double Face Mechanical Seal

TG4702 is the double face construction mechanical seals, gland fixed design in the inboard of stationary seat, which can improve seals working pressure range. It is widely used in rotating Equipment on waste water, mud media

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Products Details
  Double face、unbalanced、large spring arrange

  Gland fixed design in the inboard of stationary seat

  Special design in the primary ring and metal part

Recommended Applications

  Submersible electric pumps, sewage pumps

  Other Rotating Equipment

Operating range

Shaft diameter:  d1=12...50

Pressure: p=-0.05...0.3Mpa(43.5psi)

Temperature:  t = -20 °C ...70 °C(-4°F to 158°F)

Sliding velocity:  n≤3000r/min


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

Product Structure
Combination Materials
 Rotary Face 
    Carbon graphite resin impregnated Ak 
    Hot-Pressing Carbon Ac 
    Silicon carbide (RBSIC) O
 Stationary Seat 
    Aluminium oxide(Ceramic) B
    Silicon carbide (RBSIC) O
 Auxiliary Seal
    Nitrile-Butadiene-Rubber (NBR) P
    Fluorocarbon-Rubber (Viton) V
    Stainless Steel (SUS304) F
 Metal Parts
    Stainless Steel (SUS304) F
Stationary Seat
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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.