Steatite Ceramic Cup Bushings | High Temperature Insulators

Du-Co Ceramics manufactures steatite ceramic cup bushings designed to provide excellent electrical insulation and dependable support for wires, rods, and conductors in demanding industrial applications. Manufactured from high-performance steatite ceramic, these bushings offer excellent dielectric strength, thermal stability, and long service life, making them ideal for high-temperature and high-voltage environments. Standard sizes are available, and custom dimensions can be manufactured to meet specific application requirements.

Click on dimension header to list by size

Part No.	OD	ID	Length	D	E
A-1392	0.200	0.105	0.093	0.150	0.020
A-1637	0.250	0.120	0.112	0.160	0.050
A-1294	0.250	0.120	0.156	0.164	0.093
A-1613	0.250	0.120	0.187	0.162	0.094
A-1699	0.250	0.120	0.187	0.166	0.093
A-1927	0.312	0.060	0.406	0.205	0.313
A-1190	0.313	0.120	0.156	0.209	0.093
A-1342	0.375	0.146	0.187	0.255	0.095
A-1391	0.375	0.150	0.250	0.248	0.150
A-1410	0.375	0.150	0.375	0.240	0.234
A-0658	0.380	0.187	0.215	0.297	0.085
A-2502*	0.437	0.170	0.312	0.312	0.105
A-0654	0.488	0.147	0.250	0.329	0.125
A-2392*	0.490	0.148	0.314	0.300	0.187
A-2459	0.500	0.135	0.250	0.324	0.125
A-0558*	0.500	0.171	0.275	0.340	0.140
A-1485	0.500	0.140	0.294	0.285	0.232
A-1440	0.500	0.156	0.250	0.242	0.150
A-0684	0.507	0.219	0.280	0.406	0.120
A-0587	0.531	0.156	0.215	0.499	0.214
Part No.	OD	ID	Length	D	E
A-0888	0.531	0.156	0.247	0.499	0.214
A-0581	0.540	0.234	0.140	0.373	0.045
A-2537	0.620	0.210	0.437	0.455	0.187
A-2797	0.620	0.210	0.688	0.455	0.250
A-0504	0.625	0.156	0.365	0.386	0.178
A-2396*	0.625	0.203	0.375	0.375	0.187
A-3109	0.625	0.195	0.445	0.205	0.445
A-4037	0.625	0.187	0.250	0.100	0.250
A-0930	0.625	0.150	0.292	0.335	0.207
A-2198*	0.625	0.380	0.156	0.500	0.062
A-1163	0.687	0.187	0.500	0.437	0.375
A-1712	0.687	0.205	0.531	0.445	0.125
A-3990	0.750	0.190	0.535	0.555	0.435
A-4023	0.750	0.180	0.500	0.582	0.370
A-0771	0.750	0.145	0.375	0.500	0.250
A-1156	0.750	0.203	0.437	0.500	0.312
A-1305*	0.843	0.187	0.500	0.500	0.375
A-1305-1*	0.843	0.187	0.500	0.500	0.437
A-1079	0.865	0.210	0.500	0.680	0.375
Part No.	OD	ID	Length	D	E
A-3113	0.875	0.200	0.500	0.512	0.385
A-3114	0.875	0.260	0.500	0.512	0.385
A-3115	0.875	0.325	0.500	0.512	0.385
A-1022	0.937	0.167	0.500	0.687	0.375
A-1890	1.000	0.250	0.500	0.656	0.250
A-2542	1.000	0.520	0.380	0.655	0.145
A-1078	1.031	0.210	0.500	0.787	0.375
A-1021	1.062	0.167	0.500	0.812	0.375
A-1437	1.125	0.260	0.750	0.760	0.562
A-1162	1.312	0.187	0.625	1.165	0.500
A-1111	2.000	0.562	0.687	1.312	0.500

This information is for design guidance only. Du-Co Ceramics Company will not guarantee this information as absolute values. Various geometries can affect properties.

*Designates Matching Shoulder Bushing. These items are standard tooling.

Need a Steatite Ceramic Bushing for Your Application?

Du-Co Ceramics manufactures precision steatite ceramic cup bushings in a wide range of standard sizes and can develop custom configurations to meet your specific requirements. Contact our team to discuss your application, review available dimensions, or request a quote for your next project.