NV-3

Description

Description

Wave spring mechanical seal type NV – 3 is very similar to seal types NV – 1 and NV – 2. Main difference is the wave spring instead of multiple springs or single spring. Reason is usage in high viscosity media or media containing solids. Mechanical seal design with wave spring prevents sticking and blocking of small multiple springs. Another advantage of wave springs is more uniform force on the seal face. A steep characteristics curve makes wave springs more sensitive and allow small axial space requirements.

Face materials:

  • carbon-graphite
  • Cr-steel
  • Cr-Ni steel
  • tungsten carbide
  • silicon carbide
  • alumina

Operating limits:

  • p= 16 bar
  • t= -40 to 220 °C
  • v = 20 m/s
Catalogue and datasheet

Catalogue

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Industries

Industries

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Feel free to download out Across industries catalogue, where you can find additional information.

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NV-1

Multiple springs mechanical seal type NV-1 is mainly used in petrochemical, oil refining and process industries. Secondary sealing on a shaft with

NV-2

Mechanical seal type NV – 2 is very similar to seal type NV – 1. The main difference is single spring instead

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