8329TCM is a thermally conductive two-part epoxy adhesive. It is dark grey, smooth, viscous, thixotropic, and bonds well to a wide variety of substrates. This product is used to bond heat sinks, LEDs, and other heat-generating components in electronic assemblies. 8329TCM has been designed for maximum thermal conductivity with a high viscosity. For a lower viscosity, use 8329TFM. For a faster working life, use 8329TCF. For a longer working life, use 8329TCS.