Technical Information
About
Mechanical Seal

Mechanical Seal is a device used to stop 100% leakage from Rotary Equipment. It has Rotating & Stationary faces with Elastomers & energize component like spring or Bellow. It has several

Advantages:

  • 1. Stop 100% Leakage
  • 2. Save Energy
  • 3. Reduce Maintenance
  • 4. Reduce environment Hazards
  • 5. Improve Work Culture
  • 6. Keep Clean Work Station
  • 7. Reduce Shaft / Sleeve erosion
  • 8. Save Manpower

Important Factors in selection of Mechanical Seals:

  • 1. Pressure / Vacuum
  • 2. Temperature
  • 3. Speed
  • 4. Corrosion
  • 5. PH Value
  • 6. Nature of liquids

Material For Faces :

Are here with their PV Value in unit of Bar / M/ Sec in bracket. It is a product of Pressure & Velocity, higher the PV Value more is the life of Seal.

  • 1. Carbon Vs Cr. St. (50)
  • 2. Carbon Vs Nirerist (300)
  • 3. Carbon Vs Ceramic (170)
  • 4. Carbon Vs T.C. (350)
  • 5. Carbon Vs SIC (1750)
  • 6. Carbon Vs Stellite (240)
  • 7. T.C. Vs T.C. (50)
  • 8. T.C Vs SiC (170)
  • 9. SIC Vs SiC (150)
  • 10. GFT Vs Ceramic (50)

SIC Silicon Carbide       TC Tungsten Carbide      Cr. St. Chrome Steel      GFT = Glass filled PTFE

Elastomers:

Used by us are given below with their Temperature Limits in °C in bracket.

  • 1. P.T.F.E: (-80 to 220°C)
  • 2. G.F.T: (-80 to 232°C)
  • 3. Viton: (-29 to 204°C)
  • 4. Perflouro (upto 350°C)
  • 5. Nitrile: (-40 to 121°C)
  • 6. Graphite (upto 800)
  • 7. Silicon: (-62 to 204°C)
  • 8. Neoprene: (-55 to 149°C)
  • 9. Aflas: (-30 to 235°C)
  • 10. EPDM: (-50 to 160°C)

G.F.T. = Glass filled Teflon       Vt. = Viton      Nt. = Nitrile      Pf. = Perflouro Si Silicon      Ne. = Neoprene      C.F.T. = Carbon filled Teflon      Ep. = EPDM

Hadware and Spring Materials :

Material used by us for Mechanical Seal are;

  • 1. SS-316
  • 2. Alloy-20 (A-20)
  • 3. Hastelloy-C (H-C)
  • 4. Hastelloy-B (H-B)
  • 5. Monel (Mo)
  • 6. Titanium (Ti)
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