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DuPont Performance Polymers Kalrez® AeroSeal™ 7777 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™ 7777 Fluoroelastomer.pdf
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Material Notes:
DuPont™ Kalrez AeroSeal™ 7777 perfluoroelastomer parts are a specialty black product that meets the requirements of Aerospace Material Specification (AMS) 7257C. It offers outstanding thermal stability and compression set resistance along with excellent seal force retention properties. It also offers excellent resistance to HTS (High Thermo-Oxidative Stability) gas turbine engine lubricating oils and has excellent response to temperature cycling effects. Kalrez AeroSeal™ 7777 has good mechanical properties and is well suited for both static and dynamic sealing applications. A maximum continuous service temperature of 325 C (617 F) is suggested. Short excursions to higher temperatures may also be possible. Performance Features/Benefits Outstanding thermal stability Outstanding 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 Lower coefficient of thermal expansion (CTE) versus other Kalrez® products thus minimizing the need to increase the free volume of the seal gland when upgrading from fluoroelastomers (FKM) to perfluoroelastomers (FFKM) to Kalrez® AeroSeal™ 7777.
Mechanical Properties Metric English Comments
Hardness, Shore A 75
75
ASTM D2240
Tensile Strength at Break 17.91 MPa
2598 psi
ASTM D412
Elongation at Break 160 %
160 %
ASTM D412
100% Modulus 0.00758 GPa
1.10 ksi
ASTM D412
Compression Set 15 %

@Temperature 204 °C,
Time 252000 sec
15 %

@Temperature 399 °F,
Time 70.0 hour
ASTM D1414 and ASTM D395B
19 %

@Temperature 300 °C,
Time 252000 sec
19 %

@Temperature 572 °F,
Time 70.0 hour
ASTM D1414 and ASTM D395B
34 %

@Temperature 325 °C,
Time 252000 sec
34 %

@Temperature 617 °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 -4.00 °C
24.8 °F
Retraction Temperature, Tr10; ASTM D1329
Descriptive Properties Value Comments
Color Black
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