Pressure Seal 23718 Ethylene Propylene

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Pressure Seal 23718 Ethylene Propylene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 23718 is a 70 durometer black colored EPDM elastomer, it is formulated with Teflon to provide internal lubrication. It exhibits good resistance to heat , compression set and boiling water. It will remain non brittle at low temperatures. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 2 AA 715 A13 EA14 F17; 3 AA 715 B13 B33 EA14 F17 G21; 4 AA 715 A13 B13 B33 EA14 F17 G21 F17; 5 AA 715 A13 B13 B33 EA14 F17 G21; 2 BA 715 F17; 3 BA 715 A14 B13 F17 F19; 4 BA 715 A14 F17; 5 BA 715F17 F19; 4 CA 715 A25 B35 EA14 F17 F18 F19 G21; 5 CA 715 A25 B35 EA14 F17 F18 G11 G21 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.15 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	75
	73 @Temperature 100 °C, Time 252000 sec	Distilled water aged
	75 @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	75 @Temperature 100 °C, Time 252000 sec	Heat Aged
	76 @Temperature 125 °C, Time 252000 sec	Heat Aged
	76 @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
Tensile Strength	2388 psi
	2497.8 psi @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	2524.1 psi @Temperature 100 °C, Time 252000 sec	Heat Aged
	2533.7 psi @Temperature 125 °C, Time 252000 sec	Heat Aged
	2533.7 psi @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
Elongation, Ultimate	303 %
	320 % @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	322.1 % @Temperature 100 °C, Time 252000 sec	Heat Aged
	329.1 % @Temperature 125 °C, Time 252000 sec	Heat Aged
	329.1 % @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
100% Modulus	367 psi
Tear Strength	148 pli	Die B
	187 pli	Die C
Compression Set	10.4 % @Temperature 125 °C, Time 79200 sec	Solid
	11.3 % @Temperature 100 °C, Time 79200 sec	Solid
	13.8 % @Temperature 100 °C, Time 79200 sec	Plied
	13.8 % @Temperature 125 °C, Time 79200 sec	Plied
	13.9 % @Temperature 70.0 °C, Time 79200 sec	Solid
	18.1 % @Temperature 70.0 °C, Time 79200 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	<= -70.0 °F
Shrinkage	-1.30 % @Temperature 100 °C, Time 252000 sec	Volume, Distilled water aged

Descriptive Properties
Color	Black

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PPRESL227 / 318437

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