DuPont Silastic® Q7-4720 Dow-Corning Biomedical Grade ETR Elastomer

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DuPont Silastic® Q7-4720 Dow-Corning Biomedical Grade ETR Elastomer (discontinued **)
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Information provided by Multibase Former Dow (Multibase) grade.
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Physical Properties	Original Value	Comments

Specific Gravity	1.11 g/cc	as molded- 10 minutes at 116°C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	22	as molded- 10 minutes at 116°C
	46	post cured- 2 hours at 177°C
	46	post cured- 4 hours at 177°C
	46	post cured- 8 hours at 177°C
Tensile Strength, Ultimate	1321 psi	post cured- 8 hours at 177°C
	1347 psi	as molded- 10 minutes at 116°C
	1399 psi	post cured- 4 hours at 177°C
	1419 psi	post cured- 2 hours at 177°C
Tensile Strength, Yield	58.0 psi	at 200%, as molded- 10 minutes at 116°C
	207 psi	200%, post cured- 4 hours at 177°C
	215 psi	200%, post cured- 8 hours at 177°C
	222 psi	at 200%, post cured- 2 hours at 177°C
Elongation at Break	742 %	post cured- 8 hours at 177°C
	767 %	post cured- 2 hours at 177°C
	771 %	post cured- 4 hours at 177°C
	1283 %	as molded- 10 minutes at 116°C
Tear Strength	168 pli	post cured- 4 hours at 177°C; Die B
	175 pli	post cured- 2 hours at 177°C; Die B
	184 pli	as molded- 10 minutes at 116°C; Die B
	193 pli	post cured- 8 hours at 177°C; Die B
Compression Set	25.6 % @Temperature 177 °C, Time 79200 sec	post cured- 8 hours at 177°C
	30.1 % @Temperature 177 °C, Time 79200 sec	as molded-10 minutes at 116°C
	33.6 % @Temperature 177 °C, Time 79200 sec	post cured- 2 hours at 177°C
	41.1 % @Temperature 177 °C, Time 79200 sec	post cured- 4 hours at 177°C

**
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