The present invention provides organosiloxane compositions that cure to optically transparent gels by a hydrosilation reaction and contain a) two types of alkenyl-substituted organopolysiloxanes, and b) a diorganopolysiloxane containing an average of at least two silicon-bonded hydrogen atoms per molecule that are located on non-terminal silicon atoms. The molar ratio of silicon-bonded hydrogen atoms to alkenyl radicals in the composition is from 0.1 to 1.2.
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