Self-lubricating LSR is the material of choice for electrical sealing applications in automotive applications. With constant changes in the industry, the performance requirements of this material becomes increasingly challenging and related material formulations constantly more complex. This discussion will give an overview on factors impacting sealing properties, propose a new additive to noticeably shift the thermal stability of a whole material family, and provide insights on how this new additive can stabilize the set of mechanical properties at elevated temperatures.