Pressure Seal 4705 Chloroprene

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Pressure Seal 4705 Chloroprene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 4705 is a 70 durometer black colored general purpose Neoprene elastomer. It exhibits good resistance to heat and compression set and 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 3 BC 715 A14 B14 C12 EO14 EO34 F17; 5 BC 715 A14 B14 C12 EO14 EO34 F19; 6 BC 715 A14 B14 C12 EO14 EO34 F17; 2 BE 715 A14 B14 EO14 EO34 F17; 3 BE 715 A14 B14 EO14 EO34 F19 AMS 3209 MIL-R-6855 Class 2a & 2b Grade 70 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.42 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	69
	53 @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #3
	68 @Treatment Temp. 100 °C, Time 252000 sec	Distilled water aged
	70 @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #1
	75 @Treatment Temp. 100 °C, Time 252000 sec	Heat Aged
Tensile Strength	1861 psi
	1352.9 psi @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #3
	1941 psi @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #1
	1972.7 psi @Treatment Temp. 100 °C, Time 252000 sec	Heat Aged
Elongation, Ultimate	250 %
	188 % @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #3
	225 % @Treatment Temp. 100 °C, Time 252000 sec	Heat Aged
	225 % @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #1
100% Modulus	528 psi
Tear Strength	112 pli	Die B
Compression Set	9.6 % @Treatment Temp. 100 °C, Time 79200 sec	Solid
	17.4 % @Treatment Temp. 100 °C, Time 252000 sec	Solid

Thermal Properties	Original Value	Comments
Brittleness Temperature	-67.0 °F
Shrinkage	-4.70 % @Treatment Temp. 100 °C, Time 252000 sec	Volume, ASTM Oil #1
	8.1 % @Treatment Temp. 100 °C, Time 252000 sec	Volume, Distilled water aged
	43.1 % @Treatment Temp. 100 °C, Time 252000 sec	Volume, ASTM Oil #3

Descriptive Properties
Color	Black

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