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 Type2 Replacement

Non-pusher elastomer bellows mechanical seal type 2 is ideal for use in very short stuffing boxs due to a compact working height. TG2U,TG2K conform with US and UK standard respectively. Type 2 mechanical seal is widely used in the pumps, mixers, air compressors, fans and other rotating equipment.

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Products Details
  Reliable transmission due to special design in the drive band and drive notches
  Special balancing in the elastomer bellows. design,avaliable in high-pressure application
  Single seal、balanced、Bi-directional
  Good interchange ability,TG2U Dimensional data conform with US standard,TG2K conform with UK standard
  Available in metric and inch sizes
  TG2  can also be used as double face mechanical seals in two sets arrangement
Recommended Applications
  Water and waste water technology。
  Petroleum chemical industry
  Industrial pumps
  Process pumps
  Other Rotating Equipment
Operating range

Shaft diameter: d1=16...75mm(0.625'' ...3.000'')
Pressure:  p=0...1.7Mpa(246.5psi)
Temperature:  t = -40 °C ...200 °C(-40°F to 392°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 
    Tungsten carbide W1
    Silicon carbide (RBSIC) O
 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

T1N equivalent to John Crane N

Alternatives Stationary Seat:T6WG,T6W

T6WG equivalent to John Crane WG 

T6W equivalent to John Crane W

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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.