Pressure Seal 23858 Ethylene Propylene

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Pressure Seal 23858 Ethylene Propylene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 23858 is an 80 durometer black colored EPDM elastomer, it is formulated with Teflon to provide internal lubrication. It exhibits good resistance to heat, compression set and water. It will remain nonbrittle at low temperatures. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 2 AA 815 A13 F17 EA14; 2 BA 815 F17; 4 BA 815 A14 F17; 7 CA 815 A25 B35 F17 F18 G11 G21 EA14; 8 CA 815 A25 B35 F17 G11 G21 EA14; 2 DA 815 B36 F19 G11 G21 EA14; 3 DA 815 F19 G11 G21 EA14 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.20 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	83
	85 @Temperature 100 °C, Time 252000 sec	Distilled water aged
	87 @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	88 @Temperature 100 °C, Time 252000 sec	Heat Aged
	89 @Temperature 125 °C, Time 252000 sec	Heat Aged
	89 @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	91 @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	91 @Temperature 150 °C, Time 252000 sec	Heat Aged
Tensile Strength	1911 psi
	1674 psi @Temperature 150 °C, Time 252000 sec	Heat Aged
	1674 psi @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	1880.4 psi @Temperature 100 °C, Time 252000 sec	Heat Aged
	2161.3 psi @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	7261.8 psi @Temperature 125 °C, Time 252000 sec	Heat Aged
	7261.8 psi @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
Elongation, Ultimate	213 %
	162.9 % @Temperature 150 °C, Time 252000 sec	Heat Aged
	162.9 % @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	188 % @Temperature 100 °C, Time 252000 sec	Heat Aged
	213 % @Temperature 125 °C, Time 252000 sec	Heat Aged
	213 % @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	213 % @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
100% Modulus	828 psi
Tear Strength	181 pli	Die B
Compression Set	14.8 % @Temperature 70.0 °C, Time 79200 sec	Solid
	18 % @Temperature 100 °C, Time 79200 sec	Plied
	23.5 % @Temperature 70.0 °C, Time 79200 sec	Plied
	26.6 % @Temperature 125 °C, Time 79200 sec	Plied
	28.1 % @Temperature 100 °C, Time 252000 sec	Plied
	35.3 % @Temperature 150 °C, Time 79200 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	-90.0 °F
Shrinkage	-0.700 % @Temperature 100 °C, Time 252000 sec	Volume, Distilled water aged

Descriptive Properties
Color	Black

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PPRESL236 / 318446

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