PURPOSE: To make possible dip molding in a high temperature region and to obtain the title molding uniform in thickness and quality by applying addition reaction hardening liquid silicone rubber compound containing inorganic filler with specified viscosity and pot life.

CONSTITUTION: First, the viscosity and pot life of the additional reaction hardening liquid silicone rubber compound containing inorganic filler is controlled generally by means of hardening retarder and viscosity adjuster so that the viscosity of said compound at 250°C is 10W1,000,000 centipoises and the pot life thereof is 30 days min. The mold in the region of 150W250°C is dipped in said compound, preferably, for 1secW10min, then, drawn up and a molded piece is released from the mold and obtained in the desired form.

EFFECT: Foamless, stable molded pieces are obtained continuously.