Mechanical seal with PTFE secondary seal 153, 353, 313


Chemical and petrochemical Food processing industry Metallurgy Petrochemicals transport Power engineering, NPP Pulp and paper industry

For pumps:

The seal is inteneded for sealing shafts pumping aggressive, poisonous, toxic and highly-corrosive chemical liquids.
  • Unbalanced
353, 313
  • Balanced

Sealing fluids

  • Chemicals, solvents and other highly-corrosive fluids
  • Clean fluids with small concentration of solids and slight viscosity

Performance parameters

  • Pressure
    8 kgf/cm2 / 153
    16 kgf/cm2 / 353, 313
  • Temperature:
    from –50° upto +220°С
    16 kgf/cm2 / 353, 313
  • Shaft diameter: 20-130 mm
Cost Effective Solutions

Material design

  • Metal parts: Stainless steel К, Е, И
  • Spring: Stainless steel К, Е, И, Hastelloy
  • Secondary seal: PTFE (Ф4)
  • Seal faces material: Carbon graphite impregnated, silicon graphites, silicon carbide, tungsten carbide
Cost Effective Solutions

Heat exchanger design specific features

  • Simple and compact design
  • For plain shafts
  • Seal balance (353,313) reduces the impact of fluid increased pressure
  • Multiple coil-springs (153, 353) provide uniform load on seal faces interface
  • Single spring (313) provides better corrosion resistance of unit

What one needs to know when choosing a mechanical seal?

Equipment characteristics

Shaft diameter, temperature, pressure and fluid type are the main parameters when choosing a seal, but there are many other factors

Choice of a manufacturer is important

Lots of products that do not meet the required quality are being produced at the market now.

Service life extension

Operating time of component part is several times longer if the mechanical seal is selected correctly

Filling in an order form usually takes about