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Kalrez® 4079
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Producer: 
DuPont
Brand: 
Kalrez
Kalrez® 4079 perfluoroelastomer parts are a low compression set product for general purpose use in O-rings, diaphragms, seals and other parts used in the chemical process and aircraft industries. It is a carbon black filled product with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic acids, inorganic acids and aldehydes, and has good response to temperature cycling effects. A maximum service temperature of 316°C (600°F) is suggested, with short excursions to higher temperatures possible. Kalrez® 4079 is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide, or propylene oxide.

Kalrez® 4079

Producer: 
DuPont
Brand: 
Kalrez
Kalrez® 4079 perfluoroelastomer parts are a low compression set product for general purpose use in O-rings, diaphragms, seals and other parts used in the chemical process and aircraft industries. It is a carbon black filled product with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic acids, inorganic acids and aldehydes, and has good response to temperature cycling effects. A maximum service temperature of 316°C (600°F) is suggested, with short excursions to higher temperatures possible. Kalrez® 4079 is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide, or propylene oxide.
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Identification & Functionality

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Features & Benefits

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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

Figure 2 : Sealing force retention at 204°C

Figure 3 : Performance Comparison

Properties

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Typical Properties
ValueUnitsTest Method / Conditions
Compression Set (70 hr at 204°C (400 °F))14%ASTM D395B
Compression Set (70 hr, 204°C, 400°F)14%ASTM D395B
Lowest Service Temperature-19 (-2.2)°C (°F)
ColorBlack
Hardness75Shore AASTM D2240
100% Modulus7.24 (1050)MPa (psi)ASTM D412
Hardness - Shore A75ASTM D2240
Maximum Service Temperature316 (600)°C (°F)
Elongation at Break150%ASTM D412
Tensile Strength at Break16.88 (2450)MPa (psi)ASTM D412
Color
Black
Fillers
Carbon Black

Documents (30)

Name
Type
Kalrez® Spectrum™ Perfluoroelastomer Parts
Brochure
Kalrez® Spectrum™ (Spanish)
Brochure
Kalrez® Spectrum™ (German)
Brochure
Kalrez® Spectrum™ (French)
Brochure
Kalrez® 4079 Technical Data Sheet
Technical Data Sheet