Tapered sleeve
Model
ESP porcelain insulators - electrical porcelain sleeve (95 porcelain, 50 porcelain, pressure insulators, conical porcelain sets, supporting porcelain sets, high temperature porcelain sets, high-voltage porcelain, quartz tube)
T515-2,T515-4,T515-1,7272,7268,7257, 7251,7278-C,7410,7255,7257-A,7254,7269,7269-A,7272-B,7278,7252,7253,7258,7259-A,7257-B, 7261,7269-C,7264,7264-A,7271.