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Bellow seals

Type 169 Multiple Spring PTFE Elastomer Bellow Mechanical Seal

YL 169

SKU : Type 169

Basic Features

  • Structure: Single End
  • Pressure: Low Pressure Mechanical Seals
  • Speed: General Speed Mechanical Seal
  • Temperature: General Temperature Mechanical Seal
  • Performance: Corrosion
  • Standard: JB/T 7371-94
  • Model NO.: Type 169
  • Balance: Balanced
  • Specification: Inner Diameter: 30 mm to 60 mm

Product Detailed Description

YALAN 169 Multiple Spring PTFE Elastomer Bellow Mechanical Seal for Chemical Pumps

Structural Features: single end, multiple springs, balanced PTFE elastomer bellow mechanical seal. This seal uses multiple small springs and PTFE bellows as compensation components and the rotary component is driven by the PTFE bellow. This seal is outboard installed.

Industrial Standards: JB/T 7371-94

Scopes of Application: widely used in chemical pumps, especially alkali pumps that work with alkali liquid containing solid particles.

  • Operation Parameters:

    • Pressure: 0 to 0.5 MPa
    • Temperature: 0 ºC to 130 ºC
    • Linear Speed: 14 m/s or less


    • Rotary Ring Face: SiC/TC
    • Stationary Ring Face: SiC/TC
    • Elastomers: Aflas/Viton/PTFE/FFKM
    • Springs: SS316/SS316L/HC276
    • Metal Parts: SS316/SS316L/HC276

    Mediums: strong alkali, with solid particles between 10% to 20%, alkali density not higher than 42%.

    Customization: Changes of materials for getting other operating parameters are possible. Contact us with your requirements.


YALAN Seals Global
Anhui, China
21st Floor, Lanjing International Tower
Yaohai, City of Hefei

+86 551 6428 7402

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