: SSC 117 (OTTO) SStrontium titanium oxide substrate, <111>, 10 mm x 10 mm x 5 mm - used as diamond stimulant, in precision optics, in varistors, and in advanced ceramics. SSC 117 (OTTO) SStrontium titanium oxide substrate, <111>, 10 mm x 10 mm x 5 mm - used in in radioisotope thermoelectric generators.