Pressure Seal 4757 Chloroprene

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Pressure Seal 4757 Chloroprene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 4757 is a 70 durometer blue colored Neoprene elastomer, it s is formulated with Teflon to provide internal lubrication. It exhibits good tear strength and good resistance to moderate heat. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 3 BC 715 A14 B14 EO14 EO34 G21 Z1; 5 BC 715 A14 B14 EO14 EO34 G21 Z1; 6 BC 715 A14 B14 EO14 EO34 G21 Z1; 2 BE 715 A14 EO14 EO34 Z1; 3 BE 715 A14 EO14 EO34 G21 Z1 Z1 = 75 +/- 5 Shore A Durometer Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.71 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	79
	59 @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #3
	73 @Treatment Temp. 100 °C, Time 252000 sec	Distilled water aged
	73 @Treatment Temp. 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	74 @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #1
	82 @Treatment Temp. 100 °C, Time 252000 sec	Heat Aged
Tensile Strength	1952 psi
	1460.1 psi @Treatment Temp. 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	1518.7 psi @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #3
	2000.8 psi @Treatment Temp. 100 °C, Time 252000 sec	Heat Aged
	2117.9 psi @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #1
Elongation, Ultimate	460 %
	409.86 % @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #3
	430.1 % @Treatment Temp. 100 °C, Time 252000 sec	Heat Aged
	479.8 % @Treatment Temp. 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	510.14 % @Treatment Temp. 100 °C, Time 252000 sec	ASTM Oil #1
100% Modulus	1048 psi
Tear Strength	259 pli	Die B; Method D 624
	277 pli	Die C; Method D 624
Compression Set	27.8 % @Treatment Temp. 100 °C, Time 79200 sec	Solid
	33.9 % @Treatment Temp. 100 °C, Time 252000 sec	Solid
	38.7 % @Treatment Temp. 100 °C, Time 79200 sec	Plied
	46.5 % @Treatment Temp. 100 °C, Time 252000 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	-26.0 °F
Shrinkage	5.0 % @Treatment Temp. 100 °C, Time 252000 sec	Volume, ASTM Oil #1
	9.0 % @Treatment Temp. 100 °C, Time 252000 sec	Volume, Distilled water aged
	10.9 % @Treatment Temp. 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel A
	53.1 % @Treatment Temp. 100 °C, Time 252000 sec	Volume, ASTM Oil #3

Descriptive Properties
Color	Blue

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