Electrolube htsp35sl heat transfer compound plus silicone 35ml electrolube htsp35sl electrolube htsp is designed for use as a thermal interface material it is recommended where large amounts of heat need to be dissipated efficiently ensuring the reliable thermal coupling of electronic components to heatsinks etc htsp is a highly thermally conductive non curing heat transfer paste based on a silicone oil and offers an exceptionally wide range of operating temperatures electrolube htsp35s