Pressure Seal 3757 Nitrile

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Pressure Seal 3757 Nitrile - Butadiene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Compound 3757 is a 70 durometer black colored Buna N elastomer, it is formulated with an organic lubricant to provide self lubrication. It exhibits good resistance to compression set. This compound will meet or exceed the specifications listed and has the following physical properties: ASTM D2000 2 BF 720 B14 B34 EO14 EO34; 2 BG 720 B14 B34 EA14 EF11 EF21 EO14 EO34; 3 BG 720 B14 EO14; 4 BG 720 B14 EO14; 5 BG 720 A14 B14 B34 EO14 EO34 This Compound is RoHS Compliant Information provided by Pressure Seals Inc.
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Physical Properties	Original Value	Comments

Specific Gravity	1.21 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	72
	61 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	68 @Temperature 100 °C, Time 252000 sec	ASTM Oil #3 (IRM 903)
	72 @Temperature 100 °C, Time 252000 sec	Distilled water aged
	72 @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	76 @Temperature 100 °C, Time 252000 sec	ASTM Oil #1 (IRM 901)
	79 @Temperature 100 °C, Time 252000 sec	Heat Aged
	82 @Temperature 125 °C, Time 252000 sec	Heat Aged
	82 @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
Tensile Strength	2263 psi
	1504.9 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	2149.85 psi @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
	2333.2 psi @Temperature 100 °C, Time 252000 sec	ASTM Oil #3 (IRM 903)
	2487.04 psi @Temperature 100 °C, Time 252000 sec	ASTM Oil #1 (IRM 901)
	2528.8 psi @Temperature 125 °C, Time 252000 sec	Heat Aged
	2690.7 psi @Temperature 100 °C, Time 252000 sec	Heat Aged
	3228.6 psi @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
Elongation, Ultimate	360 %
	209.88 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel B
	230.04 % @Temperature 100 °C, Time 252000 sec	ASTM Oil #1 (IRM 901)
	259.92 % @Temperature 125 °C, Time 252000 sec	Heat Aged
	259.92 % @Temperature 125 °C, Time 252000 sec	Heat Aged, Test Tube Method
	270 % @Temperature 100 °C, Time 252000 sec	Heat Aged
	320.04 % @Temperature 100 °C, Time 252000 sec	ASTM Oil #3 (IRM 903)
	330.1 % @Temperature 23.0 °C, Time 252000 sec	ASTM Reference Fuel A
100% Modulus	605 psi
Tear Strength	215 pli	Die B; Method D 624
	226 pli	Die C; Method D 624
Compression Set	5.8 % @Temperature 100 °C, Time 79200 sec	Solid
	8.6 % @Temperature 100 °C, Time 252000 sec	Solid
	15.4 % @Temperature 100 °C, Time 79200 sec	Plied
	17.4 % @Temperature 100 °C, Time 252000 sec	Plied

Thermal Properties	Original Value	Comments
Brittleness Temperature	-33.0 °F
Shrinkage	-34.1 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel B
	-3.30 % @Temperature 100 °C, Time 252000 sec	Volume, ASTM Oil #1 (IRM 901)
	1.9 % @Temperature 23.0 °C, Time 252000 sec	Volume, ASTM Reference Fuel A
	2.5 % @Temperature 100 °C, Time 252000 sec	Volume, Distilled water aged
	12.6 % @Temperature 100 °C, Time 252000 sec	Volume, ASTM Oil #3 (IRM 903)

Descriptive Properties
Color	Black

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