6204 Full Ceramic Bearing SIC Silicon Carbide 20x47x14mm SiC Bearing6204 Full Ceramic Ball Bearing Silicon Carbide (SiC) 20mm x 47mm x 14mm Ultra Hard, High Temperature, Chemical Resistant The 6204 full ceramic bearing made from Silicon Carbide (SiC) is one of the hardest and most heat resistant options available. Designed for the harshest environments, this bearing can withstand extreme chemical exposure, high mechanical stress, and elevated temperatures ideal for aerospace, chemical processing, and specialized lab