Abstract: A gel has improved thermal stability and is the hydrosilylation reaction product of (A) an organopolysiloxane having an average of at least 0.1 silicon-bonded alkenyl group per molecule and (B) a cross-linker having an average of at least 2 silicon-bonded hydrogen atoms per molecule. (A) and (B) react via hydrosilylation in the presence of (C) a hydrosilylation catalyst and (D) a phthalocyanine. The (D) phthalocyanine is present in an amount of from about 0.05 to about 30 weight percent based on a total weight of (A) and (B). The gel has a hardness of less than about 1500 grams as measured after heat ageing at 225° C. for 1000 hours that is calculated as a weight required to insert a TA-23 probe into the gel to a depth of 3 mm.