Pressure Seal 3820 Nitrile

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Pressure Seal 3820 Nitrile - Butadiene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 3820 is an 80 durometer black colored Buna N elastomer, it is specifically formulated for resistance to hot petroleum based oils and dry heat. It also exhibits very good resistance to compression set. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 2 BF 820 B14 B34 EO14 EO34; 3 BG 820 B14 EO14; 4 BG 820 A14 B14 EO14; 6 BG 820 A14 B14 B34 EO14 EO34; 7 BG 820 B14 EA14 EF11 EF21 EO14 EO34 F16; 4 BK 820 A24 B14 B34 EF11 EF21 EO14; 3 CH 820 A25 B14 B34 EO16 EO36; 4 CH 820 A25 B14 EF31 EO15 EO35 F16; 5 CH 820 A25 B14 B34 EO36 F14; 6 CH 820 B14 B34 EO36 Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.22 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	78
	67 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel C
	69 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	73 @Temperature 125 °C, Time 252000 sec	ASTM Oil #3
	74 @Temperature 150 °C, Time 252000 sec	ASTM Oil #3
	75 @Temperature 100 °C, Time 252000 sec	ASTM Oil #3
	76 @Temperature 100 °C, Time 252000 sec	Distilled water aged
	78 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	80 @Temperature 125 °C, Time 252000 sec	ASTM Oil #1
	80 @Temperature 150 °C, Time 252000 sec	ASTM Oil #1
	82 @Temperature 100 °C, Time 252000 sec	ASTM Oil #1
	82 @Temperature 100 °C, Time 252000 sec	Heat Aged
	86 @Temperature 125 °C, Time 252000 sec	Heat Aged
	86 @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
Tensile Strength	2314 psi
	1092.7 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel C
	1478.65 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	2082.6 psi @Temperature 150 °C, Time 252000 sec	ASTM Oil #3
	2184.42 psi @Temperature 150 °C, Time 252000 sec	ASTM Oil #1
	2223.75 psi @Temperature 125 °C, Time 252000 sec	Heat Aged
	2223.75 psi @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	2226.1 psi @Temperature 100 °C, Time 252000 sec	Heat Aged
	2228.4 psi @Temperature 125 °C, Time 252000 sec	ASTM Oil #3
	2371.85 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	2438.96 psi @Temperature 100 °C, Time 252000 sec	ASTM Oil #3
	2452.8 psi @Temperature 100 °C, Time 252000 sec	ASTM Oil #1
	2556.9 psi @Temperature 125 °C, Time 252000 sec	ASTM Oil #1
Elongation, Ultimate	173 %
	116.1 % @Temperature 125 °C, Time 252000 sec	Heat Aged
	116.1 % @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	120.93 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	129.1 % @Temperature 150 °C, Time 252000 sec	ASTM Oil #1
	140.95 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel C
	141 % @Temperature 150 °C, Time 252000 sec	ASTM Oil #3
	147.9 % @Temperature 100 °C, Time 252000 sec	Heat Aged
	157.1 % @Temperature 125 °C, Time 252000 sec	ASTM Oil #3
	162.966 % @Temperature 125 °C, Time 252000 sec	ASTM Oil #1
	166.95 % @Temperature 100 °C, Time 252000 sec	ASTM Oil #1
	173 % @Temperature 100 °C, Time 252000 sec	ASTM Oil #3
	174.9 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
100% Modulus	1044 psi
Tear Strength	197 pli	Die C
	260 pli	Die B
Compression Set	9.0 % @Temperature 100 °C, Time 79200 sec	Solid
	9.9 % @Temperature 100 °C, Time 252000 sec	Solid
	12 % @Temperature 125 °C, Time 79200 sec	Solid
	12.9 % @Temperature 100 °C, Time 79200 sec	Plied
	16 % @Temperature 100 °C, Time 252000 sec	Plied
	20.3 % @Temperature 125 °C, Time 79200 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	-35.0 °F
Shrinkage	-4.80 % @Temperature 125 °C, Time 252000 sec	Volume, ASTM Oil #1
	-4.60 % @Temperature 150 °C, Time 252000 sec	Volume, ASTM Oil #1
	-4.60 % @Temperature 100 °C, Time 252000 sec	Volume, ASTM Oil #1
	-0.700 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel A
	2.8 % @Temperature 100 °C, Time 252000 sec	Volume, Distilled water aged
	7.8 % @Temperature 100 °C, Time 252000 sec	Volume, ASTM Oil #3
	9.2 % @Temperature 125 °C, Time 252000 sec	Volume, ASTM Oil #3
	9.6 % @Temperature 150 °C, Time 252000 sec	Volume, ASTM Oil #3
	23.8 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel B
	43.3 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel C

Descriptive Properties
Color	Black

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PPRESL028 / 318238

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