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Kalrez® 4079

Chemical Family
Fluoropolymers

Kalrez® 4079 perfluoroelastomer o-rings were introduced in the 1980’s. Kalrez o-rings are effective sealing elements in high-heat and aggressive chemical environments. Kalrez is “A” rated in more than 1800 chemicals and has a maximum continuous service temperature rating of 600°F/316°C.

Product families

Applications

Industrial — Chemical & Industrial Manufacturing
  • Equipment & Parts
  • Other Industrial Applications
Industrial — Oil, Gas & Mining
  • Exploration & Upstream
  • Other Oil Gas & Mining Applications

Product Families

Elastomers — Specialty Elastomers
  • Fluoroelastomers

Other characteristics

Brand
Process Technologies Kalrez
Features

Chemical Resistant, High Hardness, High Temperature Strength, Low Compression Set, Low Temperature Strength, Very Good Heat Resistance

Polymer Name
Perfluoroelastomer (FFKM)
Markets
Industrial
Technology
Elastomers
Material Features
  • Chemical Resistant
  • High Hardness
  • High Temperature Strength
  • Low Compression Set
  • Low Temperature Strength
  • Very Good Heat Resistance
Plastics and Elastomers End Uses
  • Gaskets
  • O Rings
  • Pumps
  • Valves

Technical data

Table 1 of 1

9 rows
CharacteristicValueUnitMethod
Hardness83.0Shore AD2240
Temperature Retraction TR-10-2.0°CD1429
Elongation Break150.0%D1414
Tensile Strength (Break)2450.0psiD1414
Maximum Continuous Service600.0°F—
Maximum Continuous Service316.0°C—
Specific Gravity1.95g/cm3D297
Compression Set (25% Deflection at 70 Hours & 400°F/204°C, in Air)37.0%—
Compression Set (25% Deflection at 70 Hours & 527°F/275°C, in Air)45.0%—

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