Lubricant and use thereof for curing tires

A lubricant composition which comprises:

• (a) about 5 to about 100 parts by weight polydimethylsiloxane characterized by having a viscosity in the range of about 300,000 to about 1.2 million centistrokes at 25.degree. C.;
• (b) about 10 to about 700 parts by weight mica having an average particle size of less than about 200 U.S. standard mesh size;
• (c) at least one of the following thickening materials
• (1) about 5 to about 100 parts by weight kaolin clay having an average particle size of less than 400 U.S. standard mesh size:
• (2) about 5 to about 100 parts by weight bentonite clay having an average particle size of less than about 400 U.S. standard mesh size and
• (3) about 5 to about 25 parts by weight of at least one of hydroxypropyl methyl cellulose, hydroxybutyl methyl cellulose and methyl cellulose and
• (d) about 5 to about 40 parts by weight fatty amide lubricant having a softening point according to ASTM 1894-78 in the range of about 68.degree. C. to about 86.degree. C.