Precision Polymer F70A

Category: Fluoro Si , Fluorosilicone
Manufacturer: Precision Polymer Engineering Ltd.
Trademark: Precision Polymer
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: cVgVaU_Precision-Polymer-F70A.pdf
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Blue Fluorosilicone Rubber, 60 to 70 °IRHD. Fluorosilicone rubber having methyl, vinyl and fluorine substituent groups on the polymer chain. Meets material properties of Aerospace Specification Mil-R-25988B, Class 1, Grade 70.

Excellent heat resistance and low temperature flexibility. Suitable for sealing petroleum oils and hydrocarbon fuels. Fluorosilicones are widely used in aircraft fuel systems.
General Information
Features
  • Flexibility at low temperatures
  • Heat resistance, high
Uses
  • Aircraft applications
  • Seals
Agency Ratings
  • MIL R-25988B
Appearance
  • Blue
HardnessNominal ValueTest Method
IRHD Hardness 65ASTM D1415, ISO 48
ElastomersNominal ValueUnitTest Method
Tensile Strength (Yield)8.00MPaASTM D412, ISO 37
Tensile Elongation (Break)200%ASTM D412, ISO 37
Compression Set (175°C, 22 hr)10%ASTM D395, ISO 815
AgingNominal ValueUnitTest Method
Change in Tensile Strength in Air (200°C, 70 hr)5.0%ASTM D573, ISO 188
Change in Ultimate Elongation in Air (200°C, 70 hr)-14%ASTM D573, ISO 188
Change in IRHD Hardness in Air (200°C, 70 hr)5.0ASTM D573, ISO 188
ThermalNominal ValueUnit
Maximum Operating Temperature 225°C
Additional InformationNominal ValueUnit
Low Temperature Resistance - TR10 -57°C
Minimum Operating Temperature: -55°C (-67°F)
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