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TG640

Metal Bellow Mechanical Seal

TG640 Seres mechanical seal featuring welded metal bellowsstatic seal, The bellows adopts advanced welding technology. 45°C wave design, which makes the stress distribution more reasonable and flexibility, to ensure seals has advantages of reliable sealing and good matching property. The structureadopts a static design, which eliminates the influence of centrifugal force on the elastic element, and is suitable forhigh-speed working conditions ; the seal has excellent dynamic performance and has a wide range of applications.
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Features
  Welded metal bellows
  Static structure
  Balanced
  Flexible graphite auxiliary seal
  Available with DOUBLE-PLY Bellows
  TG640 seal, equivalent to Type DBM-B-1
Operating range
Shaft diameter:  d1=30...100mm
Pressure:  p=0...2.5Mpa（362.5psi）
Temperature:  t = -40 °C ...290 °C(-40°F to 554°F)-TG640C
                       t = -20 °C ...220 °C(-4°F to 428°F)-TG640T
                       t = -20 °C ...150 °C(-4°F to 302°F)-TG640G
Sliding velocity: Vg≤25m/s（or Vg≤5,000rpm）（82ft/s））
 
Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials
Product Structure

Combination Materials
1.BELLOWS
    CrNiMo-steel  G                AM350  T8                  Hastelloy C-276  M5
2.SEAL FACE
    Carbon graphite  AD           Sintered Silicon  O1      Sintered Silicon    O1  
    antimony impreg                  Carbide SSlC                Carbide SSIC
3.AUXILIARY SEAL
    PTFE  G                         PTFE  G                 PTFE  G
4.ROTARY HEAD
  CrNiMo-steel  G           All0y 42  T4                Hastelloy C-276  M5 
5.METAL PATRTS
    CrNiMo-steel  G        CrNiMo-steel  G            Hastelloy C-276  M5  
6.APPLICATION
   Non-corrosive medium    Mildly corosive medium    Corrosive medium

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at or use the following enquiry form. Our sales will contact you within 24 hours. Thank you for your interest in our products.

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