polymers Article Understanding the Effects of In-Service Temperature and Functional Fluid on the Ageing of Silicone Rubber Sima Kashi 1,* , Mandy De Souza 1, Salwan Al-Assafi 2 and Russell Varley 1 1 Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia; mandy...