Standard Gasket Compound#	GE7A1
Common Names/Aliases	Silicone Rubber
Grade	Commercial, FDA
Color	Red
Chemical Group (ASTM D-2000 Code)	VQM,Q (GE)
Application	Rubber of choice where for high temperature, medical, and food grade static seals.  Complies with numerous ASTM, Military, and FDA specifications.  Relatively poor tensile, tear, and abrasion resistance renders unsuitable for many dynamic sealing applications.
Competing Compounds
Standard Specifications (related technical specs detailed below)	ASTM  D-2000-01 M5GE706-A19-B37-E016-E036-EA14-F19-G11;  ZZR-765 Cl 2a & 2b, Grade 70;  FDA CFR 177.2600; AMS 3304; AS3582 (supersedes MS 9068)
	Physical Properties
Item (Unit)	Specification	Actual
Hardness - Durometer	70 +/- 5 Shore A	71 Shore A
Tensile Strength	870 psi (6 MPa) min	995 psi (6.9 MPa)
Elongation%	150% min	175%
Temperature Range	n/a	-80 F/+400 F (-62 C/+204 C)
Specific Gravity	n/a	1.43
	Actual Test Data (ASTM D2000 Suffix Reference)
	(A19) Heat Age, 70 hrs @ 437o F (225o C)
Hardness-Durometer Change	+10 Shore A max	+4 Shore A
Tensile Strength Change	-25% max	-14.3%
Elongation% Change	-30% max	-18.4%
	(B37) Compression Set, 22 hrs @ 347o F (175o C)
Original Deflection	25% max	12.4%
	Compression Set, 70 hrs @ 302o F (150o C)
Compression Deflection%	n/a	19.4%
	(EA14) Water Resistance 70 hrs @ 212o F (100o C)
Hardness-Durometer Change	+/-5 Shore A max	-1 Shore A
Volume Change	+/-5% max	+2.5%
	(EO16) ASTM #1 Oil, 70 hrs @ 302o F (150o C)
Hardness-Durometer Change	0/-15 Shore A max	-7 Shore A
Tensile Strength Change	-20%	-2.9%
Elongation% Change	-20%	0
Volume Change	0/+10% range	+6.4%
	(EO36) ASTM #3 Oil, 70 hrs @ 302o F (150o C)
Hardness-Durometer Change	-30 Shore A max	-20 Shore A
Tensile Strength Change	n/a	n/a
Elongation% Change	n/a	n/a
Volume Change	+60% max	+35%
	(F19) Low Temperature Brittleness, 3 min @ -67o F (-55o C)
Per ASTM D2137, Method A	Non-Brittle	Pass
	Low Temperature Brittleness, 3 min @ -85o F (-65o C)
Per ASTM D2137, Method A	Non-Brittle	Pass