What is a conductive elastomer material selection chart?

A conductive elastomer material selection chart helps engineers compare material properties and select the most suitable EMI shielding gasket material for their application.

Why is material selection important for EMI shielding?

Material selection affects shielding effectiveness, electrical conductivity, environmental sealing, durability, and long-term performance.

What properties are compared in the material selection chart?

The chart compares shielding effectiveness, volume resistivity, hardness, specific gravity, filler materials, and elastomer types.

What filler materials are used in conductive elastomers?

Common filler materials include silver, silver-plated copper, silver-plated aluminum, nickel-graphite, and nickel-coated fillers.

How does shielding effectiveness vary between materials?

Shielding effectiveness varies by filler type, elastomer formulation, frequency range, and application requirements.

How do I choose the right conductive elastomer material?

Material selection should be based on shielding requirements, environmental conditions, conductivity needs, mechanical properties, and cost considerations.

Can conductive elastomers provide environmental sealing?

Yes. Conductive elastomers provide both EMI shielding and environmental sealing in a single gasket solution.

What applications use conductive elastomer materials?

Conductive elastomer materials are used in aerospace, defense, telecommunications, medical devices, industrial electronics, and other high-reliability applications.

LeaderTech

Material Selection Chart

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Conductive Elastomer Material Selection Chart

Leader Tech’s Conductive Elastomer Material Selection Chart helps engineers compare electrically conductive elastomer materials. It is mainly used for EMI/RFI shielding and environmental sealing applications.

The chart provides important electrical and physical performance data to support accurate conductive gasket material selection.

Additionally, these materials are designed to deliver reliable EMI shielding performance, strong environmental protection, and long-term durability across demanding operating condition

LTE Material Number	LTE-10	LTE-15	LTE-20	LTE-30	LTE-35	LTE-40-45D	LTE-40-50D	LTE-40	LTE-45	LTE-50	LTE-55	LTE-60-40D	LTE-60*	LTE-65	LTE-80	LTE-90	LTE-105	LTE-110
Elastomer Type	SIL	SIL	SIL	FSIL	FSIL	FSIL	FSIL	FSIL	SIL	SIL	SIL	SIL	SIL	SIL	FSIL	FSIL	SIL	FSIL
Filler Material	Ag/Cu	Ag/Cu	Ag/Al	Ag/Cu	Ag	Ag/Al	Ag/Al	Ag/Al	Ag/Cu	Ag/Glass	Ag	Ni/C	Ni/C	Ag/Ni	Ag/Ni	Ni/C	Ni/Al	Ni/Al
MIL-DTL-83528 Material Type	A	G	B	C	F	-	-	D	K	M	E	-	-	L	-	-	-	-
Electrical Properties
Volume Resistivity, Max (Ohm-cm)	0.004	0.007	0.008	0.010	0.002	0.015	0.015	0.012	0.005	0.006	0.002	0.100	0.100	0.005	0.006	0.100	0.150	0.250
Shielding Effectiveness 20MHz-10GHz, Min (dB)	110	110	100	110	110	90	90	90	110	100	110	100	100	100	90	100	-	100
Physical Properties
Specific Gravity, ±13%	3.50	4.75	2.00	4.00	4.00	1.90	1.90	2.00	3.50	1.90	3.50	1.90	1.90	4.00	4.10	2.20	2.20	2.05
Hardness, ±7 (Shore A)	65	80	65	75	75	45	50	70	85	200	65	40	55*	75	75	70	68	72
Tensile Strength, Min (PSI)	200	600	200	180	250	100	100	180	400	100/300	300	125	150	200	300	150	150	150
Elongation, Min/Max (%)	100/300	20/ꚙ	100/300	100/300	100/300	60/260	60/260	60/260	100/300	30	200/500	100/300	50/250	100/300	70/300	60/250	100/-	50/-
Tear Strength, Min (PSI)	25	70	30	35	40	100	100	35	40	30	50	20	20	30	45	40	40	35
Compression Set, Max (%)	32	NA	32	35	60	35	35	30	35	160	45	40	35	32	40	25	30	30
Operating Temperature, Min/Max (°C)	-55/125	-45/125	-55/160	-55/125	-65/160	-55/160	-55/160	-55/160	-45/125	-55/160	-55/160	-55/160	-55/160	-55/160	-55/125	-55/160	-55/125	-55/125
Outgassing Properties
Total Mass Loss (TML)	0.25%	0.10%	0.31%	0.09%	0.21%	-	-	0.32%	0.21%	0.23%	0.15%	-	0.29%	0.21%	0.11%	0.27%	0.26%	0.27%
Collected Volatile Condensable Materials (CVCM)	0.06%	0.04%	0.07%	<0.01%	<0.01%	-	-	0.03%	0.05%	0.08%	0.06%	-	0.13%	0.06%	0.02%	0.03%	0.07%	0.05%
Water Vapor Regained (WVR)	0.01%	0.01%	0.03%	0.02%	0.03%	-	-	0.02%	0.01%	0.01%	0.01%	-	0.01%	0.01%	0.02%	0.04%	0.01%	0.02%
Electrical Stability
After Heat Aging, Max (Ω-cm)	0.010	0.010	0.010	0.015	0.010	0.015	0.015	0.015	0.010	0.015	0.010	0.150	0.200	0.010	0.015	0.200	-	-
After Break, Max (Ω-cm)	0.008	NA	0.015	0.015	0.010	0.025	0.025	0.015	0.010	0.009	0.010	0.250	0.100	0.010	N/A	0.100	-	-
During Vibration, Max (Ω-cm)	0.006	0.010	0.012	0.015	0.010	0.015	0.015	0.015	0.010	0.009	0.010	0.150	0.100	0.010	0.015	0.100	-	-
After Vibration, Max (Ω-cm)	0.004	0.007	0.008	0.010	0.002	0.012	0.012	0.012	0.005	0.006	0.002	0.100	0.100	0.005	0.006	0.100	-	-
After Exposure to EMP, Max (Ω-cm)	0.010	0.010	0.010	0.015	0.010	0.015	0.015	0.015	0.010	0.015	0.010	0.150	0.100	0.010	0.010	0.100	-	-
Compression/Deflection, Min (%)	3.5	2.5	3.5	3.5	3.5	3.5	3.5	3.5	2.5	3.5	2.5	3.0	8.0	3.5	3.5	5.0	-	-
Fluid Immersion, Survivable/Nonsurvivable (SUR/NS)	NS	NS	NS	SUR	SUR	SUR	SUR	SUR	NS	NS	NS	SUR	NS	NS	SUR	SUR	-	SUR
*Extruded material will have a harness of 70±7 Shore A

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Conductive Elastomer Material Selection Chart

Conductive Elastomer Material Selection Chart

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