CN
EMI-absorbing and heat-conductive material
Single-Component EMI-Absorbing Thermally Conductive Gel
Guanxu® GTH-8740S is a pre-cured, single-component EMI-absorbing thermally conductive gel engineered for high-performance electronic devices. It delivers excellent electromagnetic interference (EMI) noise suppression while providing superior thermal conductivity—making it ideal for applications that simultaneously demand EMI absorption and efficient heat dissipation.
Its gel-like physical form offers exceptional application flexibility and adaptability to variable gaps, with outstanding compressibility and conformability. This enables seamless integration into large-scale, automated dispensing processes and makes it particularly well-suited for irregular surfaces and uneven gap-filling scenarios.
Key Features

Combines EMI shielding with broadband electromagnetic noise absorption, offering an integrated solution for thermal management and EMI control in electronic systems.

High temperature resistance, excellent aging resistance, and stable chemical properties; suitable for long-term operation in temperatures ranging from –40°C to +200°C.

Single-component formulation for ease of use, excellent gap-filling capability in complex or irregular geometries, and high moldability/conformability.

Market Applications
Key Applications
Product Models
ItemTypical ValueTest Method
AppearanceGray pasteVisual inspection
Density (g/cm³)4.5ASTMD792
Thermal Conductivity (W/m·K)4ASTMD5470
Extrusion rate (g/min)30±530ccEFD,2.5mm nozzle diameter,90psi&60s
Attenuation (dB/cm)≥25@10GHz
≥55@18GHzSJ205 12-1995
≥65@25GHz
≥60@40GHz
≥60@77GHz
Operating Temperature (°C)-40℃~+200℃-
Shelf Life (months)6-