502-65
502-65 is a 65 Shore A silicone elastomer filled with nickel-coated graphite, supplied in both continuous roll and sheet form. It delivers shielding effectiveness of >113 dB (20 MHz–10 GHz, E-field), a volume resistivity of 0.1 ohm/cm MAX (measured on the finished product), and a thermal stability range of -55°C to 200°C. Tensile strength is 240 psi and elongation is 530%.
Key Properties
- Durometer / Hardness (Shore A): 65 (58–68 range)
- Tensile Strength: 240 psi (200 minimum)
- Elongation: 530% (200 minimum)
- Volume Resistivity: 0.1 ohm/cm MAX
- Specific Gravity: 1.93
- Thermal Stability Range: -55°C – 200°C
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- Specifications
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Physical Properties
| Property | Value | Test Method |
| Color | Dark Gray | — |
| Specific Gravity (Report) | 1.93 | — |
Mechanical Properties
| Property | Value | Test Method |
| Shore A (58–68 range) | 65 | — |
| Tensile psi (200 minimum) | 240 psi | — |
| Elongation % (200 minimum) | 530% | — |
| Tear “B” ppi (35 min) | 60 | — |
Thermal Properties
| Property | Value | Test Method |
| Thermal Stability Range | -55°C – 200°C | — |
Electrical Properties
| Property | Value | Test Method |
| Volume Resistivity ohm/cm | 0.1 ohm/cm MAX | — |
| Shielding Effectiveness 20 MHz–10 GHz (E-Field) | >113 | — |
- EMI/RFI shielding gaskets for commercial and industrial electronic enclosures requiring a firm, dimensionally stable elastomer
- Electrically conductive seals where higher Shore A hardness supports precise gasket cross-section retention
- Die-cut shielding gaskets from continuous roll stock requiring >113 dB shielding effectiveness
- Conductive elastomeric seals for electronic systems operating across -55°C to 200°C thermal range
- Applications requiring the highest tensile strength in the 502-series conductive elastomer family
Common industries: Electronics, telecommunications, defense, industrial equipment, medical devices.
502-65 is the firmest grade in the 502-series of nickel-coated graphite filled conductive silicone elastomers, with a Shore A hardness of 65 (58–68 range). It is supplied in continuous roll and sheet form and is intended for EMI/RFI shielding applications requiring a stiffer, more dimensionally stable conductive elastomer. Volume resistivity is measured on the finished product at 0.1 ohm/cm MAX, and shielding effectiveness is >113 dB across 20 MHz to 10 GHz (E-field). Data was generated using ASTM test methods and procedures.
The material delivers 240 psi tensile strength — the highest in the 502-series — 530% elongation, a Tear “B” of 60 ppi, and a specific gravity of 1.93. The thermal stability range is -55°C to 200°C. No thermal conductivity value is listed on the TDS for this grade. No catalyzing or shelf life information is listed on the TDS for this grade.
What differentiates 502-65 from 502-30 and 502-40?
502-65 is the firmest grade in the 502-series at 65 Shore A (58–68 range), offering the highest tensile strength at 240 psi and the highest Tear "B" at 60 ppi, making it suited to applications where the gasket must resist mechanical damage during handling and assembly. Its elongation of 530% is lower than 502-30 (900%) and 502-40 (800%), reflecting the stiffer compound. The color is Dark Gray versus Black for 502-30 and 502-40. No thermal conductivity value is listed on the TDS for 502-65.
Why is compression set critical for this material?
As a conductive elastomeric shielding gasket material, 502-65 must maintain intimate contact with mating surfaces throughout its service life to sustain shielding effectiveness of >113 dB and volume resistivity of 0.1 ohm/cm MAX. Compression set resistance ensures the gasket does not permanently deform under sustained closure load, preserving the conductive interface over time. No compression set value is listed on the TDS for this grade.
What is the thermal stability range for 502-65?
The thermal stability range for 502-65 is -55°C to 200°C as listed on the TDS.
Is 502-65 suitable for regulated or military environments?
No compliance standards or military specifications are listed on the manufacturer's TDS for this material.
How should 502-65 be specified?
Specify grade (502-65), supply form (sheet stock or roll), thickness, compliance requirements, dimensional tolerances, and finished format.
