502F-60
502F-60 is a 60 durometer fluorosilicone elastomer filled with nickel-coated graphite, supplied as a ready-to-mold compound, fully cured electrically conductive sheet stock, continuous extrusion profiles, and, for select formulations, continuous rolls. It delivers shielding effectiveness of >113 dB (compound and sheets) and >100 dB (rolls) from 200 MHz to 10 GHz (E-field), with volume resistivity of 0.05 ohm/cm (compound and sheets) and 0.10 ohm/cm (rolls), and a thermal stability range of -55°C to 200°C. Data was generated with the DBPH catalyst system.
Key Properties
- Hardness Shore A (58–68 range): 60 (ASTM D2240)
- Tensile Strength (200 minimum): 225 psi (ASTM D412)
- Elongation % (200 minimum): 400% (ASTM D412)
- Volume Resistivity ohm/cm (0.1 max) — Compound/Sheets: .05 ohm/cm (ASTM D991)
- Specific Gravity (2.10–2.25): 2.20 (ASTM D792)
- Thermal Stability Range: -55°C – 200°C
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Physical Properties
| Property | Value — Typical | Value — Sheets | Value — Rolls | Test Method |
| Color | Dark Grey | Dark Grey | Dark Grey | — |
| Specific Gravity (2.10–2.25) | 2.20 | 2.20 | 2.20 | ASTM D792 |
Mechanical Properties
| Property | Value — Typical | Value — Sheets | Value — Rolls | Test Method |
| Shore A (58–68 range) | 60 | 60 | 60 | ASTM D2240 |
| Tensile psi (200 minimum) | 225 | 225 | 225 | ASTM D412 |
| Elongation % (200 minimum) | 400 | 400 | 400 | ASTM D412 |
| Tear “B” ppi (35 min) | 45 | 45 | 45 | ASTM D624 |
Thermal Properties
| Property | Value — Typical | Value — Sheets | Value — Rolls | Test Method |
| Thermal Stability Range | -55°C – 200°C | -55°C – 200°C | -55°C – 200°C | — |
Electrical Properties
| Property | Value — Typical | Value — Sheets | Value — Rolls | Test Method |
| Volume Resistivity ohm/cm (0.1 max) | .05 | .05 | .10 | ASTM D991 |
| Shielding Effectiveness 200 MHz–10 GHz (E-Field) | >113 | >113 | >100 | MIL-DTL-83528 |
Environmental Performance
| Property | Value | Test Method |
| Shelf Life — Uncatalyzed | Indefinite (may need freshening after 1–2 years) | — |
| Shelf Life — Catalyzed | 6 months | — |
| Shelf Life — Cured | Indefinite | — |
- EMI/RFI shielding gaskets requiring fluorosilicone chemical resistance to fuels and solvents at mid-range hardness
- Conductive elastomeric seals for enclosures exposed to fuels, oils, or hydraulic fluids requiring >113 dB shielding effectiveness
- Extruded conductive fluorosilicone profiles for continuous shielding in chemically aggressive environments
- Press-molded conductive components for custom fluorosilicone shielding geometries using DBPH catalyst system
- Conductive seals operating across a thermal range of -55°C to 200°C requiring consistent electrical performance across supply forms
Common industries: Aerospace, defense, electronics, industrial equipment, automotive.
502F-60 is a 60 Shore A nickel-coated graphite filled conductive fluorosilicone elastomer in the 502F-series, identified on the TDS as SSP502F-60.
It is supplied in four forms — ready-to-mold compound, fully cured electrically conductive sheet stock, continuous extrusion profiles, and, for select formulations, continuous rolls — with independently specified volume resistivity values per form: 0.05 ohm/cm for compound and sheets, and 0.10 ohm/cm for rolls. Shielding effectiveness is >113 dB (200 MHz–10 GHz, E-field) for compound and sheets, and >100 dB for rolls, measured per MIL-DTL-83528.
Data was generated with the DBPH catalyst system — distinct from the Varox system used for 502F-50 and 482F-75.
The material achieves 225 psi tensile strength, 400% elongation, and a Tear “B” of 45 ppi (ASTM D624, 35 min specification). Specific gravity is 2.20 within a 2.10–2.25 range specification (ASTM D792). Shelf life for uncatalyzed material is indefinite (may need freshening after 1–2 years); catalyzed shelf life is 6 months; cured shelf life is indefinite. Cold storage will extend shelf life of catalyzed base.
What differentiates 502F-60 from 502F-50 and 502F-80?
502F-60 occupies the middle hardness position in the nickel-coated graphite fluorosilicone series at 60 Shore A (58–68 range). It uses the DBPH catalyst system versus Varox for 502F-50, and presents a three-column data table (Typical / Sheets / Rolls) with independently specified volume resistivity per form (0.05 / 0.05 / 0.10 ohm/cm) and shielding effectiveness per form (>113 / >113 / >100 dB). Shielding is measured from 200 MHz (not 100 MHz as for 502F-50). Its tensile of 225 psi and elongation of 400% exceed 502F-80's 200% elongation minimum.
Why is compression set critical for this material?
As a conductive fluorosilicone shielding gasket material, 502F-60 must maintain intimate contact with mating surfaces in chemically aggressive environments to sustain shielding effectiveness of >113 dB and volume resistivity of 0.05 ohm/cm throughout its service life. Compression set resistance ensures the gasket does not permanently deform under sustained closure load, preserving the conductive interface. No compression set value is listed on the TDS for this grade.
What is the operating temperature range for 502F-60?
The thermal stability range for 502F-60 is -55°C to 200°C as listed on the TDS, consistent across compound, sheet, and roll supply forms.
Is 502F-60 suitable for regulated or military environments?
No compliance standards or military specifications are listed on the manufacturer's TDS for this material. Shielding effectiveness data was measured per MIL-DTL-83528 method.
How should 502F-60 be specified?
Specify grade (502F-60), supply form (compound, sheet stock, extrusion profile, or roll), thickness, compliance requirements, dimensional tolerances, and finished format.
