In a plastic organosiloxane molding composition which in the absence of water is capable of being stored and in the presence of moisture is cross-linked to a rubber, the composition comprising a hydroxypolydiorganosiloxane, a nitrogen base and heavy metal compound as cross-linking catalyst, and a cross-linking agent, the improvement which comprises employing as the cross-linking agent a compound o...

In a plastic organosiloxane molding composition which in the absence of water is capable of being stored and in the presence of moisture is cross-linked to a rubber, the composition comprising a hydroxypolydiorganosiloxane, a nitrogen base and heavy metal compound as cross-linking catalyst, and a cross-linking agent, the improvement which comprises employing as the cross-linking agent a compound o...