Standard Ribbed Ceramic Bushing Ceramic ribbed and grooved bushings are commonly used to support wires and rods and as guides in high voltage electrical equipment. Click on dimension header to list by sizePart No.MaterialRib ODIDLengthA-0238L-3 Steatite0.6880.3830.375A-3021L-3 Steatite0.8750.4750.495A-4244L-3 Steatite0.7500.4000.660A-4156L-3 Steatite0.7500.3220.630A-2122-1L-3 Steatite0.7500.3750.625A-3900L-3 Steatite0.7480.2010.630A-3099L-3 Steatite0.7300.3800.500A-1025L-3 Steatite0.7300.3800.440EM-2776L-3 Steatite0.6880.3830.500A-2597L-5 Steatite0.8750.4570.507 Download .pdf