Thermally Resistant Anaerobically Curable Compositions

An anaerobic curable composition, comprising:

• (a) a (meth)acrylate component;
• (b) an anaerobic cure system;
• and
• (c) a component comprising the structural unit, MO—X(Y)—OM′, wherein M and M′ are independently selected from the group consisting of hydrogen, sodium, potassium, and lithium, X is silicon or boron, and Y is ═O, when X is silicon and v is OH, when X is boron, provided that when Y is OH, when X is boron, the component is present in an amount within the range of about 25 weight percent to 75 weight percent.