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DuPont Performance Polymers Kalrez® AeroSeal™ 7800 Fluoroelastomer

Category Polymer , Thermoset , Fluoropolymer, TS , Thermoset Fluoroelastomer , Rubber or Thermoset Elastomer (TSE)
Manufacturer DuPont Performance Polymers (Former DuPont Elastomers)
Trade Name Kalrez®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DuPont Performance Polymers Kalrez® AeroSeal™ 7800 Fluoroelastomer.pdf
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Material Notes:
Kalrez AeroSeal™ 7800* perfluoroelastomer parts are a specialty black product that meets the requirements of Aerospace Material Specification (AMS) 7257. It offers outstanding thermal stability and compression set resistance along with excellent seal force retention properties. It also offers excellent resistance to High Thermo-Oxidative Stability (HTS) gas turbine engine lubricating oils and has excellent response to temperature cycling effects. In some high temperature aerospace applications, fluoroelastomers and perfluoroelastomers can cause corrosion in the stainless steel and titanium O-ring grooves. In DuPont tests, Kalrez AeroSeal™ 7800 parts minimized the corrosion of the titanium and stainless steel versus a typical high temperature perfluoroelastomer seal. (Fie 1) Kalrez AeroSeal™ 7800 parts have good mechanical properties and are well suited for both static and dynamic sealing applications. A maximum temperature of 325°C (617°F) is suggested. Short excursions to higher temperatures may also be possible.Performance Features/Benefits Outstanding thermal stability and compression set resistance Excellent seal force retention properties Excellent resistance to high thermo-oxidative stability (HTS) gas turbine engine lubricating oils Excellent response to temperature cycling effects Excellent mechanical properties Low corrosion on metals after exposure to high temperature
Mechanical Properties Metric English Comments
Hardness, Shore A 75
75
ASTM D2240
Tensile Strength at Break 20.1 MPa
2920 psi
ASTM D1414, ASTM D412
Elongation at Break 150 %
150 %
ASTM D1414, ASTM D412
100% Modulus 0.0113 GPa
1.64 ksi
ASTM D1414, ASTM D412
Compression Set 20 %

@Temperature 204 °C,
Time 252000 sec
20 %

@Temperature 399 °F,
Time 70.0 hour
ASTM D1414 and ASTM D395B
52 %

@Temperature 300 °C,
Time 252000 sec
52 %

@Temperature 572 °F,
Time 70.0 hour
ASTM D1414 and ASTM D395B
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 325 °C
617 °F
DuPont Test Method
Minimum Service Temperature, Air -3.00 °C
26.6 °F
Retraction Temperature, Tr10; ASTM D1329
Descriptive Properties Value Comments
Color Black
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