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Kalrez® Spectrum™ 6375

Sold by DuPont
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, Custom, Diaphragms, O-rings, Valve Seats
Features: High Temperature Resistance, Good Thermal Stability, Chemical Resistant
End Uses: Valve Parts, Electrical Connectors, Logging While Drilling Tools, Semiconductor Applications, Ball Valves, Measurement While Drilling Tools, Valves, Electric Submersible Pump
Color: Black
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TypeDocument Name
Technical Data Sheet
Kalrez® Spectrum™ 6375 Technical Data Sheet
Kalrez® Spectrum™ 6375 Technical Data Sheet
Technical Data Sheet
Other
Kalrez® Safe Handling Guidelines (Japanese)
Kalrez® Safe Handling Guidelines (Japanese)
Other
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Kalrez® - Contamination considerations for perfluoroelastomer seals used in deposition processes
Kalrez® - Contamination considerations for perfluoroelastomer seals used in deposition processes
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Kalrez® Brochure
Kalrez® Brochure
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Kalrez® Oil and Gas Product Selector Guide
Kalrez® Oil and Gas Product Selector Guide
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Kalrez® Chemical Processing Product Selector Guide
Kalrez® Chemical Processing Product Selector Guide
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Kalrez® Perfluoroelastomer Parts
Kalrez® Perfluoroelastomer Parts
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Perfluoroelastomer and Fluoroelastomer Seals for Photovoltaic Cell Manufacturing Processes
Perfluoroelastomer and Fluoroelastomer Seals for Photovoltaic Cell Manufacturing Processes
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Kalrez® Spectrum™ (Spanish)
Kalrez® Spectrum™ (Spanish)
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Brochure
Kalrez® Spectrum™ Perfluoroelastomer Parts
Kalrez® Spectrum™ Perfluoroelastomer Parts
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Brochure
Kalrez® Spectrum™ (German)
Kalrez® Spectrum™ (German)
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Brochure
Kalrez® Spectrum™ (French)
Kalrez® Spectrum™ (French)
Brochure

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Identification & Functionality

Chemical Family
Fillers Included
Technologies

Kalrez® Spectrum™ 6375 Features & Benefits

Product Highlights
  • Kalrez® Spectrum™ 6375 is a carbon black-filled product for general use in O-rings, seals, diaphragms and other parts specifically for the chemical process industry.
  • This product has excellent broad chemical resistance, good mechanical properties, and outstanding hot-air aging properties.
  • Kalrez® Spectrum™ 6375 is well suited for use in mixed process streams because of its excellent resistance to acids, bases, and amines. It is also recommended for use in hot water, steam, pure ethylene oxide and propylene oxide.

Applications & Uses

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Modulus (at 100% Elongation)9.1MPaASTM D 412
Tensile Strength15.2MPaASTM D 412
Elongation (at Break)160%ASTM D 412
Hardness (Shore A)75-ASTM D 2240
Compression Set (Pellet Type 1, at 204°C, 70h)24%ASTM D 395B
Compression Set (O-Ring AS568-214, at 204°C, 70h)25%ASTM D 1414
Typical Properties
ValueUnitsTest Method / Conditions
Maximum Service Temperature ¹275°C-
Lowest Service Temperature ¹-20°C-
Thermal Properties
ValueUnitsTest Method / Conditions
Glass Transition Temperature (at 10°C/min)-3.8°CASTM D 3418
Coefficient of Linear Thermal Expansion2.89E-4/°CISO 11359-1/-2
Retraction Temperature (TR-10)-3°CASTM D 1329
Other Properties
ValueUnitsTest Method / Conditions
Density1.99g/cm³ISO 1183
Note
  • [1]: DuPont proprietary test method; useful temperature range may vary with seal design and application specifics
Chemical Resistance

For many applications, low volume swell of elastomers is critical to proper operation of equipment. Excessive swell may cause permanent seal failure due to equipment hang \up, extrusion, etc. The following data is the result of lab testing to determine the volume swell of Kalrez® Spectrum™ 6375 when exposed to various fluids. Other physical property testing is needed to further define product performance; however, volume swell is an excell ent predictor of performance. The following chemicals represent some of themost aggressive applications in the industry. These test results are an indication of the performance of compound 6375; however, all applications are unique, and it is strongly recommended that immersion testing be performed in the actual process fluids.

Chemical

Temperature°C (°F)

Kalrez® Spectrum™ 6375 Rating

Nearest Competitive FFKM

Water

225 (437)

A C
Glacial acetic acid

100 (212)

A A
Nitric acid (70%)

85 (185)

B C
Sulfuric acid (98%)

150 (302)

A C
Maleic acid

90 (194)

A B
Ammonium hydroxide

100 (212)

B B
Ethylene oxide

50 (122)

A A
Urea

175 (347)

A B
Epichlorohydrin

100 (212)

A A
Butyraldehyde

70 (158)

A B
Toluene diisocyanate

100 (212)

A B
HCFC 134a

25 (77)

A A

Rating system:

A = 0 - 10% volume swell

B = 10 - 20% volume swell

C = >20% volume swel

Technical Details & Test Data

Thermal Resistance

Kalrez® Spectrum™ 6375 has excellent heat resistance to go along with its outstanding chemical resistance. Its proprietary curing technology allows this product to have a maximum service temperature of 275°C (525°F). One method of predicting heat resistance is compression set. This is defined as: the amount by which a standard test piece (typically an O-ring or pellet) fails to return to its original thickness after being subjected to a standard compressive load or deflection for a fixed period of time. This chart following shows some elastomer comparisons with regard to compression set resistance.

Compression Set vs. Time at 204°C (400°F)

DuPont Kalrez Spectrum 6375 Thermal Resistance

Kalrez® Spectrum™ 6375
DuPont