Room temperature curable organopolysiloxane composition

A room temperature curable organopolysiloxane composition, comprising

• (A) a diorganopolysiloxane having hydroxyl groups at both ends of the molecular chain,
• (B) 0.5 to 30 parts by weight per 100 parts by weight of component (A) of an organosilicon compound containing at least three hydrolyzable groups bonded to a silicon atom in the molecule or its partial hydrolysis-condensation product,
• (C) 1 to 5 parts by weight per 100 parts by weight of component (A) of an alkoxysilane represented by the following general formula (1):
• ##STR8## wherein R.sup.1 and R.sup.2, which are the same or different, each represent an unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms or said hydrocarbon group having at least part of the hydrogen atoms replaced by halogen atoms, R.sup.3 represents a bivalent hydrocarbon group or a bivalent group represent by the formula:
• --R.sup.4 OR.sup.5 -- or --R.sup.4 CONHR.sup.5 --
• wherein R.sup.4 and R.sup.5 each represent a bivalent hydrocarbon group, Rf represents a bivalent perfluoroalkylene group or a bivalent perfluoropolyether group, and n is an integer of 1 to 3, and
• (D) 30 to 150 parts by weight per 100 parts by weight of component (A) of aluminum hydroxide.