Welded metal bellows mechanical seals Type TG685 is a high parameter seal, used in corrosive media and large friction coefficient media. With good floatability and random compensatory, widely used in petrochemical industry,sewage treatment industry and paper industry.
Welded metal bellows construction, Balanced, Independent of direction of rotation. Extreme temperature Resistance due to flexible Graphite material in auxiliary Seal . Dimensional data conform with DIN24960 standard
Refining technology, Oil and gas industry Extreme ranges of temperature and high-viscosity media Pumps Special Rotating Equipment.
Shaft diameter: d1=18...100mm(0.750'' ...4.000'')
Pressure: p=0...2.5Mpa（362.5psi）
Temperature: t = -20 °C ...400 °C(-4°F to 752°F)
Sliding velocity: Vg≤15m/s（49.2ft/m）
Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials
Rotary Face 
Stationary Seat 
Elastomer Exfoliated Graphite G
Fluorocarbon-Rubber (Viton) V
Ethylene-Propylene-Diene (EPDM) EPTFE Enwrap Viton M1
Bellows 
Parts|
Standard Seat: T7G9 T4G9 equivalent to Burgmann G9
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