Electrically conductive silicone rubber stock

Claim 1

An uncured one component room temperature moisture curing electrically conductive RTV silicone rubber stock stored under anhydrous conditions and which will remain essentially uncured when so stored at room temperature and which comprises the mixture of essentially: 1. 75 to 98 parts by weight (PBW) of electrically conductive particles each comprising glass cores having an outer surface of silver; 2. 2 to 25 PBW of a linear siloxane polymer of the average molecular formula R'R 2 SiO[R 2 SiO] x SiR 2 R' wherein each R is a monovalent hydrocarbon radical or a halogenated monovalent hydrocarbon radical, each R' is a hydrogen atom, alkoxy radical, aryloxy radical, hydroxy radical or acyloxy group and x has an average value of from 50 to 10,000; and 3. 0.0005 to 0.020 parts by weight, based on each part by weight of the siloxane polymer, of a curing agent which is an aminosilane of the formula R" n Si(NY 2 ) 4 -n or an aminosilazane of the formula (Y.sub.2 N).sub.a R".sub.b SiNH[R".sub.b (Y.sub.2 N).sub.c SiNH].sub.m SiR".sub.b (NY.sub.2).sub.a wherein each R" is an alkyl radical, aryl radical, or aralkyl radical, each Y is a hydrogen atom, alkyl radical, aryl radical or aralkyl radical, n is 0 or 1, m at least 1, a is 2 or 3, b is 0 or 1, and c is 1 or 2.