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Elmet Technologies

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Momentive Performance Materials FQE 307U Heat Cured Rubber (HCR), Fluorosilicone base compound
Categories: Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer

Material Notes: FQE 307U fluorosilicone is a base compound to be considered for applications exposed to non-polar fluids and solvents including fuels, oils and greases. This material typically exhibits the combination of excellent compression set with high tensile strength and elongation at break at low density.

Features: Excellent fuel and oil resistance, Excellent heat resistance, Good physical properties, Very low compression set. FQE 307U fluorosilicone is an excellent candidate to consider for applications like: O-Rings, Dynamic valves, Diaphragms, Seals and gaskets in contact with fuels, oils or greases.

Formulation as tested: 100 pbw FQE 307U fluorosilicone with 0.8 pbw 2,5-dimethyl-2,5-di(tertbutylperoxy)hexane (50%). Vulcanization conditions: 10min/170 °C, post-curing: 4h/200 °C in hot air. Using other peroxides might result in different mechanical properties.

Information provided by Momentive Performance Materials.

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Physical PropertiesOriginal ValueComments
Density 1.45 g/ccUncured; JIS K 6249
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 70JIS K 6249
 71After heat aging 70h/225°C
Tensile Strength 8.50 MPaAfter heat aging 70h/225°C
 10.5 MPaJIS K 6249
Elongation at Break 198 %After heat aging 70h/225°C
 260 %JIS K 6249
Tear Strength 14.3 kg(f)/cmJIS K 6252 Crescent
 18.4 kg(f)/cmDie B.; ASTM D 624
Compression Set 5.0 %
@Temperature 180 °C,
Time 79200 sec
JIS K 6249
 
Processing PropertiesOriginal ValueComments
Processing Temperature 170 °C
@Time 601 sec
plus 4h at 200ºC post cure vulcanization; as tested. Die B
 
Descriptive Properties
AppearanceOpaque SolidUncured
Plasticity350JIS K 6249. Uncured.

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PMOMEN9966 / 265781

Ensinger PEI

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