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Kalrez® 4079

Sold by DuPont
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, Custom, Diaphragms, O-rings
Features: Good Mechanical Properties, High Temperature Resistance, Heat Aging Resistant, Low Compression Set, Good Thermal Stability, Chemical Resistant, General Purpose
End Uses: Semiconductor Applications, Pump Parts, Aircraft Applications
Color: Black
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TypeDocument Name
Technical Data Sheet
Kalrez® 4079 Technical Data Sheet
Kalrez® 4079 Technical Data Sheet
Technical Data Sheet
Other
Kalrez® Safe Handling Guidelines (Japanese)
Kalrez® Safe Handling Guidelines (Japanese)
Other
Brochure
Kalrez® - Contamination considerations for perfluoroelastomer seals used in deposition processes
Kalrez® - Contamination considerations for perfluoroelastomer seals used in deposition processes
Brochure
Brochure
Kalrez® Brochure
Kalrez® Brochure
Brochure
Other
Kalrez® Chemical Processing Product Selector Guide
Kalrez® Chemical Processing Product Selector Guide
Other
Brochure
Perfluoroelastomer and Fluoroelastomer Seals for Photovoltaic Cell Manufacturing Processes
Perfluoroelastomer and Fluoroelastomer Seals for Photovoltaic Cell Manufacturing Processes
Brochure
Other
Kalrez® Guide for Safety in Handling Kalrez® Perfluoroelastomer Parts
Kalrez® Guide for Safety in Handling Kalrez® Perfluoroelastomer Parts
Other
Other
Kalrez® Perfluoroelastomer Parts
Kalrez® Perfluoroelastomer Parts
Other
Brochure
Kalrez® Physical properties and product comparison
Kalrez® Physical properties and product comparison
Brochure
Brochure
Kalrez® Spectrum™ (German)
Kalrez® Spectrum™ (German)
Brochure
Brochure
Kalrez® Spectrum™ Perfluoroelastomer Parts
Kalrez® Spectrum™ Perfluoroelastomer Parts
Brochure
Brochure
Kalrez® Spectrum™ (Spanish)
Kalrez® Spectrum™ (Spanish)
Brochure

Knowde Enhanced TDS

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Identification & Functionality

Chemical Family
Fillers Included
Technologies

Kalrez® 4079 Features & Benefits

Product Highlights
  • Good response to temperature cycling effects
  • Outstanding hot air aging properties
  • It exhibits low swell in organic and inorganic acids
Performance Characteristics

Figure 1 : Compression set at 204°C

DuPont Kalrez 4079 Performance Characteristics - 1

Figure 2 : Sealing force retention at 204°C

DuPont Kalrez 4079 Performance Characteristics - 2

Figure 3 : Performance Comparison

DuPont Kalrez 4079 Performance Characteristics - 3

Applications & Uses

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Modulus (at 100% Elongation)7.2MPaASTM D 412
Tensile Strength16.9MPaASTM D 412
Elongation (at Break)150%ASTM D 412
Hardness (Shore A)75-ASTM D 2240
Compression Set (Pellet Type 1, at 204°C, 70h)14%ASTM D 395B
Compression Set (O-Ring AS568-214, at 204°C, 70h)35%ASTM D 1414
Typical Properties
ValueUnitsTest Method / Conditions
Maximum Service Temperature ¹316°C-
Lowest Service Temperature ¹-19°C-
Thermal Properties
ValueUnitsTest Method / Conditions
Glass Transition Temperature (at 10°C/min)-6.7°CASTM D 3418
Coefficient of Linear Thermal Expansion3.61E-4/°CISO 11359-1/-2
Retraction Temperature (TR-10)-2°CASTM D 1329
Other Properties
ValueUnitsTest Method / Conditions
Density2.02g/cm³ISO 1183
Note
  • [1]: DuPont proprietary test method; useful temperature range may vary with seal design and application specifics
Kalrez® 4079
DuPont