rubber bellows mechanical seals

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Basic Info.
  • Brand Name: TiSun 
  • functions:: for pump 
  • Exp Region:: America, Europea, east asia 
  • product name:: Bellow type mechanical seals 
  • Pressure:: ≤0.8Mpa 
  • Speed:: ≤ 10 m/Sec 
  • Temperature:: -20℃~150℃ 
  • Model No.: BT-PN 
  • Place of Origin: Zhejiang  
  • Min.Order: 10 Piece/Pieces
  • Means of Transport: Ocean, Air, Land
Supply Capacity
  • Production Capacity: 50-100 each month
  • Packing:carton
  • Delivery Date: as per the quantity


The BT-PN is a large series mechanical seal with a simple yet effective design that is easy to assemble. The special spring arrangement allows a short axial installation length. This advantage is combined with an increased working pressure capability of up to 12 bar (174 PSI). The spring is free from torque transmission.

Operating range

Shaft diameter: 
d1* = 8 … 40 mm (0.31" … 1.57")
Pressure: p1** = 12 bar (174 PSI),
vacuum … 0.5 bar (7.45 PSI)
t** = -20 °C … +120 °C (-4 °F … +248 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)

Operating limits depend on p・vg factor

* Other diameters upon request
** Dependent on medium, size and material


Seal face: 
Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B), Silicon carbide (Q1, Q6)
Aluminium oxide (V), Steatite (X), Silicon carbide (Q1, Q6, Q7)
NBR (P), FKM (V), EPDM (E) 
Metal parts: CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G)

Send message to this supplier
Ms. Tina,Zhou (sale manager)
Tel: 86-574-87228142
Mobile: 18658260067
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Contact Method
Ningbo Tisun Seals Industries Co., Ltd.
Yinzhou District, Ningbo, Zhejiang, China (Mainland) / 315000
Fax: 86-574-87228142
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