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


John Crane Type21 Replacement

Mechanical seal in the TG560 series is the ideal for general-purpose applications,designed for large batch production. Efficient stock keeping due to easily interchangeable parts.Type 560 series is widely used in the Centrifugal pumps, turbine pumps, compressors, hot water pumps and other rotary shaft equipment.

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Products Details
  Single and ealstomer bellows mechanical seal
  Non-sliding design structure,elastomer bellows automatically compensates for primary ring wear.
  TG560B,TG560K,TG560C,TG560A show difference in the  dimensional data, avaliable with different standard working lengths.
  Vailable in metric and inch sizes
  560 series can also be used as double face mechanical seals in two sets arrangement
Recommended Applications
  Water and waste water technology
  Process pumps
  Industrial pumps
  Petroleum chemical industry 
  Other Rotating Equipment
Operating range

Shaft diameter: d1=8...80mm(0.375'' ...3.000'')
Pressure: p=0...1.0Mpa(145psi)
Temperature: t = -20 °C ...150 °C(-4°F to 302°F)
Sliding velocity: Vg≤13m/s(42.6ft/m)


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
    Silicon carbide (RBSIC) O
    Hot-Pressing Carbon AC
 Stationary Seat 
    Aluminium oxide(Ceramic) B
    Silicon carbide (RBSIC) O
    Tungsten carbide W1
 Auxiliary Seal
    Nitrile-Butadiene-Rubber (NBR) P
    Fluorocarbon-Rubber (Viton) V
    Ethylene-Propylene-Diene (EPDM) E
    Stainless Steel (SUS304) F
 Metal Parts
    Stainless Steel (SUS304) F
Stationary Seat

Standard Stationary Seat:T1NG,T1N

T1NG equivalent to John Crane NG Seat 

T1N equivalent to John Crane  N Seat 

T1S43 equivalent to Sealol  43 Seat 

T1LD equivalent to Eagle ED560 Seat 

Alternatives Stationary Seat:T6WG,T6W

T6WG equivalent to John Crane WG Seat 

T6W equivalent to John Crane  W Seat 

T3S43 equivalent to Sealol  43

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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.