Pressure Seal 4768 Chloroprene

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Pressure Seal 4768 Chloroprene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 4768 is a 70 durometer black colored Neoprene elastomer, it is specifically formulated to be electrically conductive. It exhibits good resistance to heat and compression set. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 3 BC 720 A14 B14 EO14 EO34 G21; 5 BC 720 A14 B14 EO14 EO34 G21; 6 BC 720 A14 B14 EO14 EO34 G21; 2 BE 720 A14 B14 EO14; 3 BE 715 A14 B14 EO14 G21 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.32 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	67
	54 @Temperature 100 °C, Time 252000 sec	ASTM Oil #3
	57 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	60 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	64 @Temperature 100 °C, Time 252000 sec	Distilled water aged
	65 @Temperature 100 °C, Time 252000 sec	ASTM Oil #1
	69 @Temperature 100 °C, Time 252000 sec	Heat Aged
	74 @Temperature 125 °C, Time 252000 sec	Heat Aged
Tensile Strength	2262 psi
	1201.1 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	1384.3 psi @Temperature 100 °C, Time 252000 sec	ASTM Oil #3
	2115 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	2309.5 psi @Temperature 125 °C, Time 252000 sec	Heat Aged
	2384.15 psi @Temperature 100 °C, Time 252000 sec	ASTM Oil #1
	2476.9 psi @Temperature 100 °C, Time 252000 sec	Heat Aged
Elongation, Ultimate	410 %
	218.9 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	353.83 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	394 % @Temperature 100 °C, Time 252000 sec	ASTM Oil #1
	394 % @Temperature 100 °C, Time 252000 sec	ASTM Oil #3
	401.8 % @Temperature 125 °C, Time 252000 sec	Heat Aged
	419.8 % @Temperature 100 °C, Time 252000 sec	Heat Aged
100% Modulus	392 psi
Tear Strength	195 pli	Die B
	232 pli	Die C
Compression Set	14.2 % @Temperature 100 °C, Time 79200 sec	Solid
	17.5 % @Temperature 100 °C, Time 252000 sec	Solid
	24.6 % @Temperature 100 °C, Time 79200 sec	Plied
	31.4 % @Temperature 100 °C, Time 252000 sec	Plied

Electrical Properties	Original Value	Comments
Volume Resistivity	2000 ohm-cm	ASTM D257

Thermal Properties	Original Value	Comments
Brittleness Temperature	-36.0 °F
Shrinkage	-2.70 % @Temperature 100 °C, Time 252000 sec	Volume, ASTM Oil #1
	8.5 % @Temperature 100 °C, Time 252000 sec	Volume, Distilled water aged
	15.4 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel A
	55.9 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel B
	61.6 % @Temperature 100 °C, Time 252000 sec	Volume, ASTM Oil #3

Descriptive Properties
Color	Black

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PPRESL084 / 318294

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