Abstract: Crosslinkable organopolysiloxane compositions, comprising; (1) an organopolysiloxane which contains SiC-bonded radicals with aliphatic carbon—carbon multiple bonds, and (2) an organopolysiloxane with Si-bonded hydrogen atoms or, instead of (1) and (2), or (3) an organopolysiloxane which contains SiC-bonded radicals with aliphatic carbon—carbon multiple bonds and Si-bonded hydrogen atoms, (4) a catalyst which promotes the addition of Si-bonded hydrogen onto an aliphatic multiple bond, (5) a reinforcing filler (6) a non-reinforcing filler having an average particle diameter of less than 30 &mgr;m and a BET surface area of less than 30 m2/g and, optionally, further substances.

Abstract: Crosslinkable organopolysiloxane compositions, comprising;