• Item Name: THERM-A-GAP™ GEL 40NS
• Manufacturer: Parker Chomerics (Parker Hannifin)
• Technologies: Non-silicone, urethane-based thermal interface gel
• Color: Dark grey
• Cure Type: Fully cured, one-component, no secondary curing
• Package Size: 10cc syringe, 30cc cartridge, 180cc cartridge, 300cc cartridge, 600cc cartridge, 1-gallon pail
• Shelf Life: 12 months
Parker Chomerics THERM-A-GAP™ GEL 40NS is a high-performance, one-component, non-silicone thermal interface gel designed for efficient heat transfer from electronic components to heat sinks or enclosures. With a thermal conductivity of 4.0 W/m-K, it provides excellent thermal management while avoiding issues related to silicone contamination, making it ideal for sensitive applications such as optical systems. The urethane-based formulation requires no mixing or curing, is easily reworkable, and applies with minimal compression force, protecting solder joints and leads from stress. It is optimized for automated dispensing and high-reliability electronics manufacturing.
Automotive electronic control units (ECUs).
Telecommunications base stations.
Power supplies, semiconductors, and memory modules.
Microprocessors and graphics processors.
Flat panel displays and consumer electronics.
Any assembly requiring non-silicone thermal interface solutions.
| Property | Value | Notes / Test Method |
|---|---|---|
| Color | Dark Grey | Visual |
| Flow Rate | 15–25 g/min | 30cc syringe, 0.170” tip @ 90 psi |
| Specific Gravity | 3.1 | ASTM D792 |
| Min. Bondline Thickness | 0.006 in (0.15 mm) | Chomerics |
| Thermal Conductivity | 4.0 W/m-K | ASTM D5470 |
| Heat Capacity | 1 J/g-K | ASTM E1269 |
| Operating Temp. Range | -58 to 257°F (-50 to 125°C) | Chomerics |
| Dielectric Strength | 200 Vac/mil (8.0 kVac/mm) | Chomerics |
| Volume Resistivity | 1×10¹⁴ ohm-cm | ASTM D257 |
| Dielectric Constant | 4.8 @ 1,000 kHz, 0.25 mm | ASTM D150 |
| Dissipation Factor | 0.020 @ 1,000 kHz | Chomerics |
| Flammability | UL94 V-0 | Regulatory |
| Outgassing | 0.18% TML / 0.03% CVCM | ASTM E595 |
| Shelf Life | 12 months | 50–90°F (10–32°C), 50% RH |
| RoHS | Compliant | Certified |
This thermal gel combines high thermal conductivity, reworkability, and low stress application with full compliance to UL94 V-0 and RoHS standards, making it a robust choice for demanding electronic thermal management.
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