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	Metric	English	Comments

Specific Gravity	1.24 g/cc	1.24 g/cc	ASTM D297, 15

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	>= 65	>= 65	ASTM D2240, Type A
	75	75	AVG; ASTM D2240, Type A
	82 @Treatment Temp. 100 °C, Time 252000 sec	82 @Treatment Temp. 212 °F, Time 70.0 hour	After Dry Heat Aging; ASTM D865
Tensile Strength at Break	>= 5.87 MPa	>= 852 psi	ASTM D412 Method A
	8.62 MPa	1250 psi	AVG; ASTM D412 Method A
	8.867 MPa @Treatment Temp. 100 °C, Time 605000 sec	1286 psi @Treatment Temp. 212 °F, Time 168 hour	After Dry Heat Aging; ASTM D865
Tensile Stress at Strain	>= 0.958 MPa @Strain 50 %	>= 139 psi @Strain 50 %	Minimum; ASTM D412 Method A
	1.10 MPa @Strain 25 %	160 psi @Strain 25 %	Average; ASTM D412 Method A
	>= 1.28 MPa @Strain 100 %	>= 186 psi @Strain 100 %	Minimum; ASTM D412 Method A
	1.80 MPa @Strain 50 %	261 psi @Strain 50 %	Average; ASTM D412 Method A
	2.70 MPa @Strain 100 %	391 psi @Strain 100 %	Average; ASTM D412 Method A
Elongation at Break	>= 289 %	>= 289 %	ASTM D412 Method A
	490 %	490 %	AVG; ASTM D412 Method A
	166.6 % @Treatment Temp. 100 °C, Time 605000 sec	166.6 % @Treatment Temp. 212 °F, Time 168 hour	After Dry Heat Aging; ASTM D865
Modulus of Elasticity	0.00889 GPa	1.29 ksi	ASTM D412 Method A
Poissons Ratio	0.50	0.50	Calculated
Shear Modulus	0.00296 GPa	0.430 ksi	ASTM D412 Method A
Secant Modulus	0.008363 GPa	1.213 ksi	ASTM D412 Method A
Tear Strength Test	186	186	(psi); ASTM D624, Die B
Compression Set	63 % @Temperature 100 °C, Time 252000 sec	63 % @Temperature 212 °F, Time 70.0 hour	ASTM D395, Test B

Thermal Properties	Metric	English	Comments
Glass Transition Temp, Tg	-72.8 °C	-99.0 °F	ASTM D1329

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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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