Seals Eastern 7284 Butyl and Halobutyl Rubber

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Seals Eastern 7284 Butyl and Halobutyl Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Chlorobutyl; High damping; Non-conductive Information provided by Seals Eastern, Inc.
Key Words:	Chlorobutyl (CIIR)
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Physical Properties	Original Value	Comments

Specific Gravity	1.24 g/cc	ASTM D297, 15

Mechanical Properties	Original Value	Comments
Hardness, Shore A	>= 65	ASTM D2240, Type A
	75	AVG; ASTM D2240, Type A
	82 @Treatment Temp. 100 °C, Time 252000 sec	After Dry Heat Aging; ASTM D865
Tensile Strength at Break	>= 852 psi	ASTM D412 Method A
	1250 psi	AVG; ASTM D412 Method A
	1286 psi @Treatment Temp. 100 °C, Time 605000 sec	After Dry Heat Aging; ASTM D865
Tensile Stress at Strain	>= 139 psi @Strain 50 %	Minimum; ASTM D412 Method A
	160 psi @Strain 25 %	Average; ASTM D412 Method A
	>= 186 psi @Strain 100 %	Minimum; ASTM D412 Method A
	261 psi @Strain 50 %	Average; ASTM D412 Method A
	391 psi @Strain 100 %	Average; ASTM D412 Method A
Elongation at Break	>= 289 %	ASTM D412 Method A
	490 %	AVG; ASTM D412 Method A
	166.6 % @Treatment Temp. 100 °C, Time 605000 sec	After Dry Heat Aging; ASTM D865
Modulus of Elasticity	1.29 ksi	ASTM D412 Method A
Poissons Ratio	0.50	Calculated
Shear Modulus	0.430 ksi	ASTM D412 Method A
Secant Modulus	1.213 ksi	ASTM D412 Method A
Tear Strength Test	186	(psi); ASTM D624, Die B
Compression Set	63 % @Temperature 100 °C, Time 252000 sec	ASTM D395, Test B

Thermal Properties	Original Value	Comments
Glass Transition Temp, Tg	-99.0 °F	ASTM D1329

Descriptive Properties
Strain Energy / Unit Volume at 20% Elongation (psi)	27

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PSEAL53 / 80200

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