Pressure Seal 21747 Polyacrylate

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Pressure Seal 21747 Polyacrylate
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 21747 is a 70 durometer black colored general purpose Polyacrylic polymer. It exhibits good resistance to compression set, heat and petroleum based oils. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 2 DF 712 A26 B16 B36 EO16 EO36; 5 DF 708 A26 B16 EO16 EO36; 3 DH 715 A26 B16 B36 EO16 EO36 F13; 5 DH 708 A26 B16 EO16 EO36 F13 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.30 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	73
	65 @Temperature 150 °C, Time 252000 sec	ASTM OIL #3
	74 @Temperature 150 °C, Time 252000 sec	Service Fluid 100
	76 @Temperature 150 °C, Time 252000 sec	ASTM OIL #1
	80 @Temperature 150 °C, Time 252000 sec	Heat Aged
	80 @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
Tensile Strength	1760 psi
	56.3 psi @Temperature 150 °C, Time 252000 sec	Heat Aged
	56.3 psi @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	1578.7 psi @Temperature 150 °C, Time 252000 sec	ASTM OIL #3
	1744.2 psi @Temperature 150 °C, Time 252000 sec	Service Fluid 100
	1867.4 psi @Temperature 150 °C, Time 252000 sec	ASTM OIL #1
Elongation, Ultimate	220 %
	159.9 % @Temperature 150 °C, Time 252000 sec	Heat Aged
	159.9 % @Temperature 150 °C, Time 252000 sec	Heat Aged, Test Tube Method
	190.08 % @Temperature 150 °C, Time 252000 sec	ASTM OIL #1
	190.1 % @Temperature 150 °C, Time 252000 sec	ASTM OIL #3
	210.9 % @Temperature 150 °C, Time 252000 sec	Service Fluid 100
100% Modulus	763 psi
Tear Strength	179 pli	Die B
Compression Set	14.4 % @Temperature 150 °C, Time 79200 sec	Solid
	23.4 % @Temperature 150 °C, Time 252000 sec	Solid
	24.8 % @Temperature 150 °C, Time 79200 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	14.0 °F
Shrinkage	-0.400 % @Temperature 150 °C, Time 252000 sec	Volume, ASTM OIL #1
	1.8 % @Temperature 150 °C, Time 252000 sec	Volume, Service Fluid 100
	12.4 % @Temperature 150 °C, Time 252000 sec	Volume, ASTM OIL #3

Descriptive Properties
Color	Black

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