BISCO® EC-2130
2130 is an extremely soft, 30 Shore A (80 Shore OO) nickel-graphite filled electrically conductive solid silicone, available in standard thicknesses of 0.063″ ±0.15 and 0.125″ ±0.20. It delivers shielding effectiveness of approximately 105 to 110 dB across 100 MHz to 10 GHz per Mil G83528, a volume resistivity of <1.0 ohm-cm, a thermal conductivity of 3.33 W/m·K (ASTM E1530), and a compression set of 10% max (158°F, 70 hours, 25% compressed, ASTM D395 Method B). The material meets UL 94 V-0 and HF-1.
Key Properties
- Hardness Shore A: 30 ±5 (ASTM D2240)
- Hardness Shore OO: 80 ±10 (ASTM D2240)
- Tensile Strength: 60 psi (ASTM D412)
- Compression Set, 158°F for 70 Hours 25% Compressed: 10% max (ASTM D395 Method B)
- Volume Resistivity: <1.0 Ohm-cm
- Temperature Range: -79.6°F to 392°F
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.063″ ±0.15, 0.125″ ±0.20 | — |
| Base Polymer | Silicone | — |
| Filler | Nickel-Graphite | — |
| Color | Dark Gray | — |
Mechanical Properties
| Property | Value | Test Method |
| Hardness Shore A | 30 ±5 | ASTM D2240 |
| Hardness Shore OO | 80 ±10 | ASTM D2240 |
| Tensile Strength | 60 psi | ASTM D412 |
| Elongation | 50% | ASTM D412 |
| Compression Set, 158°F for 70 Hours 25% Compressed | 10% max | ASTM D395 Method B |
Thermal Properties
| Property | Value | Test Method |
| Temperature Range | -79.6°F to 392°F | — |
| Thermal Conductivity | 3.33 W/m·K | ASTM E1530 |
Electrical Properties
| Property | Value | Test Method |
| Volume Resistivity | <1.0 Ohm-cm | — |
| Shielding Effectiveness, dB @ 100 MHz | 110 | Mil G83528 |
| Shielding Effectiveness, dB @ 600 MHz | 120 | Mil G83528 |
| Shielding Effectiveness, dB @ 1 GHz | 130 | Mil G83528 |
| Shielding Effectiveness, dB @ 10 GHz | 130 | Mil G83528 |
Flame & Fire Performance
| Property | Value | Test Method |
| Flame Resistance — UL 94 V-0; HF-1 | Meets | — |
Compliance
- UL 94 V-0 — Compliant
- UL 94 HF-1 — Compliant
- EMI/RFI shielding gaskets for aerospace controls and communications equipment requiring an extremely soft, conformable conductive seal
- Defense system radios and field electronics requiring simultaneous EMI absorption and environmental sealing
- Electric vehicle battery enclosures, motor control units, inverter systems, and sensor housings subject to extreme temperature variation
- Medical device shielding for MRI, CT, wearable monitoring, and diagnostic equipment requiring soft, low-closure-force EMI gaskets
- Flame-rated EMI/RFI sealing applications requiring simultaneous UL 94 V-0 and HF-1 compliance with high thermal conductivity
Common industries: Aerospace, defense, electric vehicles, medical devices, electronics.
2130 is an extremely soft, nickel-graphite filled electrically conductive solid silicone designed for use as an EMI/RFI absorber for critical electrical components.
At 30 Shore A (80 Shore OO), it is among the softest conductive elastomers in this product family, and the TDS specifically identifies this softness as the mechanism that enables excellent environmental sealing — the extra-soft polymer conforms readily to mating surfaces, minimizing gaps in the conductive interface.
The material is highly filled with nickel-graphite to create a continuous electrical path, achieving shielding effectiveness values that increase with frequency: approximately 105 to 110 dB across 100 MHz to 10 GHz per Mil G83528. Available in 0.063″ ±0.15 and 0.125″ ±0.20 standard thicknesses.
Thermal conductivity of 3.33 W/m·K (ASTM E1530) is notably high for a conductive elastomeric gasket material, enabling simultaneous heat transfer through the seal interface. Compression set is 10% max (158°F, 70 hours, 25% compressed, ASTM D395 Method B), confirming strong long-term recovery under sustained closure force. The material meets UL 94 V-0 and HF-1 flame resistance requirements.
Compliant with UL 94 V-0 and HF-1.
What differentiates 2130 from other conductive silicone elastomers in this product group?
2130 is distinguished by three properties not typically combined in a single conductive elastomer: an extremely soft Shore A hardness of 30 ±5 (80 ±10 Shore OO) for maximum conformability and environmental sealing, a thermal conductivity of 3.33 W/m·K (ASTM E1530) that enables simultaneous heat transfer through the gasket interface, and frequency-resolved shielding effectiveness data reported at four discrete frequencies (100 MHz, 600 MHz, 1 GHz, and 10 GHz) per Mil G83528. It is also the only grade in this group to carry both UL 94 V-0 and HF-1 flame ratings.
Why is compression set critical for this material?
At 30 Shore A, 2130 must sustain intimate contact with mating surfaces under relatively low closure forces to maintain its EMI shielding effectiveness and environmental seal. Compression set resistance ensures the gasket does not permanently deform under sustained clamping load, recovering to maintain the conductive interface and sealing pressure over the product's service life. Compression set is 10% max tested at 158°F for 70 hours at 25% compression per ASTM D395 Method B — well within the specified maximum, confirming excellent long-term recovery.
What is the operating temperature range for 2130?
The temperature range for 2130 is -79.6°F to 392°F as listed on the TDS.
Is 2130 suitable for flame-rated environments?
Yes. 2130 meets the requirements of UL 94 V-0 and HF-1 as stated on the TDS.
How should 2130 be specified?
Specify grade (2130), thickness (0.063" or 0.125"), compliance requirements (UL 94 V-0, HF-1), dimensional tolerances, and finished format.
