Mechanical seal for seal arrangements 351/Т.Н.


Chemical and petrochemical Power engineering, NPP Refinery

For pumps:

Dual seal of face-to-back (tandem) configuration, designed in compliance with API 682 requirenents intended for refinery plants service conditions.
  • Part of seal arrangement
  • Dual seal of Tandem configuration
  • Cartridge design
  • For plain shafts
  • Balanced
  • Rotating flexible element
  • Impeller on the seal of the second stage
  • Unified for all oil pumps
  • Compliant with API 682
  • Applicable for all plans according to API 682

Sealing fluids

  • Oil
  • Oil products
  • Hydracarbon gas liquids
  • Organic solvents
  • Chemically active media
  • Liquids similar to the mentioned above in regard to chemical-physical properties

Performance parameters

  • Pressure upto 35 kgf/cm2
  • Temperature: from 30 upto +150(210)°С
  • Shaft diameter: 30-120 mm
Cost Effective Solutions

Material design

  • Metal parts: Stainless steel К, Е
  • Spring: Stainless steel К, Е, Hastelloy
  • Secondary seal: Fluoroelastomer based rubber
  • Seal faces material: Carbon graphite impregnated, silicon graphites, silicon carbide, tungsten carbide
Cost Effective Solutions

Heat exchanger design specific features

  • Cartridge design increases pump availability for operation
  • The seal is comletely adapted to oil pumps connection dimensions and does not require any pump parts modifications
  • The seal have all process bores necessary for most typical connections according to API 682
  • Each assembled seal is rig tested in dynamic mode and does not require any adjustment or disassembling before installation

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