Standard Ceramic Products Standard Ceramic Products offered by Du-Co Ceramics: Ceramic Ball & Socket Beads (Fish Spine Beads) Ceramic Post Terminal Caps and Skirts Standard Ceramic Band Heater Insulators Standard Ceramic Grooved Bushing Standard Ceramic Resistor Core Sizes Standard Ceramic Ribbed Bushing Steatite Ceramic Cup Bushings Steatite Ceramic Shoulder Bushings Steatite Ceramic Washers Ceramic Thermocouple Tubes (Oval) Ceramic Thermocouple Tubes (Round) Ceramic Welding Ferrules Toll Spray Drying Services 96% Alumina Substrates Metalized Steatite Bushings Alumina Tape