Pressure Seal 23518 Ethylene Propylene

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Pressure Seal 23518 Ethylene Propylene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 23518 is a 50 durometer black colored EPDM elastomer, it is formulated with Teflon to provide internal lubrication. It exhibits good resistance to heat and water. It will remain non brittle at very low temperatures. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 2 AA 520 A13 F17 EA14; 3 AA 520 B13 B33 F17 EA14; 4 AA 520 A13 B13 B33 F17 EA14; 5 AA 520 A13 B13 B33 F17 EA14; 2 BA 520 F17; 3 BA 520 A14 B13 F17 F19; 4 BA 520 A14 F17; 5 BA 520 F17 F19; 3 CA 510 A25 B44 B35 F17 F18 EA14; 4 CA 510 A25 B44 F17 F18 F19 EA14; 2 DA 520 F19 G11 G21 EA14 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.07 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	53
	47 @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	51 @Temperature 100 °C, Time 252000 sec	Distilled water aged
	59 @Temperature 100 °C, Time 252000 sec	Heat Aged
	62 @Temperature 125 °C, Time 252000 sec	Heat Aged
	62 @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	65 @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	65 @Temperature 150 °C, Time 252000 sec	Heat Aged
Tensile Strength	2133 psi
	2310.04 psi @Temperature 150 °C, Time 252000 sec	Heat Aged
	2310.04 psi @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	2410.3 psi @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	2410.3 psi @Temperature 125 °C, Time 252000 sec	Heat Aged
	2465.7 psi @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	2472.1 psi @Temperature 100 °C, Time 252000 sec	Heat Aged
Elongation, Ultimate	638 %
	650.1 % @Temperature 100 °C, Time 252000 sec	Heat Aged
	662.9 % @Temperature 125 °C, Time 252000 sec	Heat Aged
	662.9 % @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	675 % @Temperature 70.0 °C, Time 252000 sec	Heat Aged
	687.8 % @Temperature 150 °C, Time 252000 sec	Heat Aged
	687.8 % @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
100% Modulus	137 psi
Tear Strength	117 pli	Die B
Compression Set	14.8 % @Temperature 100 °C, Time 79200 sec	Solid
	15.3 % @Temperature 100 °C, Time 79200 sec	Plied
	18.4 % @Temperature 70.0 °C, Time 79200 sec	Solid
	22.6 % @Temperature 70.0 °C, Time 79200 sec	Plied
	23.5 % @Temperature 100 °C, Time 252000 sec	Plied
	23.8 % @Temperature 125 °C, Time 79200 sec	Plied
	44.3 % @Temperature 150 °C, Time 79200 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	<= -103 °F
Shrinkage	1.7 % @Temperature 100 °C, Time 252000 sec	Volume, Distilled water aged

Descriptive Properties
Color	Black

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PPRESL221 / 318431

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