Thermalright Heilos 40x60x0.25mm V2 Thermal Interface Pad — 8.5 W/mK Thermal Conductivity, 0.25mm Thickness, Gray Non-Conductive Silicone Sheet, Low Thermal Resistance 0.04 °C·cm²/W, High Resistivity 2.1×10¹⁴ Ω·cm, Compatible with CPU Coolers

General Information

• Type: Solid thermal interface pad (non-adhesive, pre-cut)
• Use Case: Designed for CPU, GPU, VRM, M.2 SSDs, and other heat-generating components
• Material: High-quality silicone-based compound with thermally conductive fillers
• Color: Gray
• Form Factor: Pre-cut sheet for easy installation
• Dimensions:
  • Length: 40 mm
  • Width: 60 mm
  • Thickness: 0.25 mm

Thermal Performance

• Thermal Conductivity: 8.5 W/m·K – delivers efficient heat transfer for modern processors
• Thermal Resistance: 0.04 °C·cm²/W – ensures minimal thermal bottleneck between component and heatsink
• Application: Ideal for use with air coolers, AIO liquid coolers, and passive cooling systems
• Temperature Stability: Operates reliably across standard PC thermal ranges
• Durability: Long-lasting performance without drying out or requiring reapplication

Electrical & Safety Features

• Electrical Resistivity: 2.1 × 10¹⁴ Ω·cm – highly non-conductive
• Electrical Isolation: Yes – safe for use on sensitive electronics without risk of short circuits
• Corrosion Resistance: Non-corrosive formula – protects PCB and surrounding components
• Handling Safety: Harmless to skin and components – no toxic or reactive materials used

Design & Application

• Material Type: Solid-phase thermal pad (not paste-based) – ideal for gap filling and even pressure distribution
• Installation Method: Drop-in replacement or supplementary to thermal paste
• Mounting Pressure: Works best under moderate pressure from cooler mounting systems
• Use With:
  • Stock or aftermarket CPU/GPU coolers
  • Memory modules with direct-contact heatsinks
  • M.2 SSDs and VRMs