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A pressure-adherent silicone elastomer composition comprising a homogeneous mixture of a silicone pressure sensitive adhesive composition, a crosslinkable silicone elastomer composition, and, optionally, a viscosity reducing agent. Specifically, the silicone pressure sensitive adhesive composition i

A pressure-adherent silicone elastomer composition comprising a homogeneous mixture of a silicone pressure sensitive adhesive composition, a crosslinkable silicone elastomer composition, and, optionally, a viscosity reducing agent. Specifically, the silicone pressure sensitive adhesive composition is a condensation product, having a plasticity of less than 200 mils, of a benzene-soluble resinous copolymer containing silicon-bonded hydroxyl radicals and consisting essentially of triorganosiloxy units of the formula R3SiO½and tetrafunctionalsiloxy units of the formula SiO4/2 in a ratio of about 0.6 to 0.9 triorganosiloxy units for each tetrafunctionalsiloxy unit present in the copolymer and a polydiorganosiloxane having a viscosity from 100 centipoise to 50,000 centipoise at 25°C.

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A pressure-adherent silicone elastomer composition comprising a homogeneous mixture of: (I) a silicone pressure sensitive adhesive composition employed in an amount from about 15 to about 90 parts by weight, said silicone pressure sensitive adhesive composition comprising a homogeneous mixture of (A

A pressure-adherent silicone elastomer composition comprising a homogeneous mixture of: (I) a silicone pressure sensitive adhesive composition employed in an amount from about 15 to about 90 parts by weight, said silicone pressure sensitive adhesive composition comprising a homogeneous mixture of (A) from about 35 to about 70 parts by weight of at least one benzene-soluble resinous copolymer containing silicon-bonded hydroxyl radicals and consisting essentially of triorganosiloxy units of the formula R3SiO½and tetrafunctionalsiloxy units of the formula SiO4/2 in a ratio of about 0.6 to 0.9 triorganosiloxy units for each tetrafunctionalsiloxy unit present in the copolymer and (B) from about 30 to about 65 parts by weight of at least one polydiorganosiloxane consisting essentially of ARSiO units terminated with endblocking TRASiO½units, each said polydiorganosiloxane having a viscosity of from about 100 centipoise to about 50,000 centipoise at 25°C. where each T is －OH or －OR′, where each R is a monovalent hydrocarbon radical having from 1 to 6 inclusive carbon atoms, each R′is an alkyl radical of from 1 to 4 inclusive carbon atoms, and each A radical is selected from the group consisting of R and halohydrocarbon radicals of from 1 to 6 inclusive carbon atoms, said silicone pressure sensitive adhesive composition having been reaction-condensed to a plasticity of not more than about 200 mils at 23°C. as measured after force is applied on a specimen weighing twice the specific gravity of the silicone pressure sensitive adhesive composition for 3 minutes ±5 seconds, (II) a non-reacted crosslinkable silicone elastomer composition which is curable by a chemistry which does not cure said silicone pressure sensitive adhesive composition (I) to the point of eliminating tack or adhesive properties employed in an amount from about 10 to about 85 parts by weight, the total of silicone pressure sensitive adhesive composition (I) and crosslinkable silicone elastomer composition (II) being 100 parts by weight, and (III) a non-volatile, nonflammable, compatible viscosity reducing agent for reducing the viscosity of said pressure-adherent silicone elastomer composition employed in an amount from 0 to about 40 weight percent based on the total weight of the silicone pressure sensitive adhesive composition (I) and the crosslinkable silicone elastomer composition (II), said viscosity reducing agent being generally nonreactive with said silicone pressure sensitive adhesive composition (I) and said crosslinkable silicone elastomer composition (II).