Room temperature curable organopolysiloxane composition

A room temperature curable organopolysiloxane composition comprising:

• (A) 100 parts by weight of a diorganopolysiloxane having a hydroxyl group at both terminal ends of its molecular chain, or 2 or 3 C.sub.1 -C.sub.4 alkoxy groups at each terminal end of its molecular chain;
• (B) 1 to 400 parts by weight of a filler;
• (C) 0 to 50 parts by weight of an alkoxysilane represented by the general formula (I)
• (R.sup.1).sub.m Si(OR.sup.2).sub.4-m (I)
• where R.sup.1 is a substituted or unsubstituted C.sub.1 -C.sub.20 monovalent hydrocarbon group, R.sup.2 is a C.sub.1 -C.sub.4 alkyl group or a C.sub.2 -C.sub.4 alkoxyalkyl group, m is an integer of 0 or 1, or a partial hydrolysis product thereof;
• (D) 0.01 to 10 parts by weight of an organosilicon compound having at least one group represented by formula (II):
• [(R.sup.3).sub.2 N].sub.2 C.dbd.N-- (II)
• where R.sup.3 is a hydrogen atom or a C.sub.1 -C.sub.6 monovalent hydrocarbon group, in its molecule;
• (E) 0.01 to 10 parts by weight of an organic tin compound;
• (F) 0.1 to 20 parts by weight of an organosilicon compound having at least one group represented by the formula (III) ##STR11## where R.sup.4 is a substituted or unsubstituted C.sub.1 -C.sub.20 monovalent hydrocarbon group, or a substituted or unsubstituted phenyl group, R.sup.5 and R.sup.6 are each a hydrogen atom, methyl or ethyl group, and n is an integer of 0, 1 or 2.