Pressure Seal 20763 Fluorinated Silicone

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Pressure Seal 20763 Fluorinated Silicone
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Compound 20763 is a 70 durometer blue colored Fluorosilicone elastomer. It exhibits good resistance to heat, compression set, synthetic based oils and aromatic fuels. This compound will meet or exceed the specifications listed and has the following physical properties: MIL-R-25988 Class 1, Grade 70, Type 1 and 11 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.52 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	72
	60 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel C
	62 @Temperature 23.0 °C, Time 79200 sec	ASTM Reference Fuel B
	63 @Temperature 150 °C, Time 252000 sec	Stauffer Blend 7700
	69 @Temperature 150 °C, Time 252000 sec	ASTM Oil #3
	72 @Temperature 150 °C, Time 252000 sec	ASTM Oil #1
	75 @Temperature 225 °C, Time 252000 sec	Heat Aged
	76 @Temperature 200 °C, Time 252000 sec	Heat Aged
Tensile Strength	1138 psi
	751.1 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel C
	762.5 psi @Temperature 150 °C, Time 252000 sec	Stauffer Blend 7700
	770.5 psi @Temperature 23.0 °C, Time 79200 sec	ASTM Reference Fuel B
	820.5 psi @Temperature 225 °C, Time 252000 sec	Heat Aged
	1001.4 psi @Temperature 200 °C, Time 252000 sec	Heat Aged
	1033.3 psi @Temperature 150 °C, Time 252000 sec	ASTM Oil #3
	1066.3 psi @Temperature 150 °C, Time 252000 sec	ASTM Oil #1
Elongation, Ultimate	230 %
	150 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel C
	160.1 % @Temperature 225 °C, Time 252000 sec	Heat Aged
	160.1 % @Temperature 23.0 °C, Time 79200 sec	ASTM Reference Fuel B
	180.1 % @Temperature 200 °C, Time 252000 sec	Heat Aged
	190 % @Temperature 150 °C, Time 252000 sec	Stauffer Blend 7700
	230 % @Temperature 150 °C, Time 252000 sec	ASTM Oil #1
	230 % @Temperature 150 °C, Time 252000 sec	ASTM Oil #3
100% Modulus	517 psi
Tear Strength	91.0 pli	Die B
Compression Set	12.4 % @Temperature 23.0 °C, Time 252000 sec	Plied
	18.1 % @Temperature 175 °C, Time 79200 sec	Plied
	18.7 % @Time 252000 sec	Stauffer Blend, plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	-80.0 °F
Shrinkage	-0.700 % @Temperature 200 °C, Time 252000 sec	Weight, Heat Aged
	1.0 % @Temperature 150 °C, Time 252000 sec	Volume, ASTM Oil #1
	4.7 % @Temperature 150 °C, Time 252000 sec	Volume, ASTM Oil #3
	11.2 % @Temperature 150 °C, Time 252000 sec	Volume, Stauffer Blend 7700
	24.3 % @Temperature 23.0 °C, Time 79200 sec	Volume, ASTM Reference Fuel B
	27.1 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel C

Descriptive Properties
Color	Blue

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PPRESL215 / 318425

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