Sigma's Plastic Insulating Bushings are used on the end of Rigid conduit, IMC and other threaded connectors to provide a smooth well rounded bearing surface to protect wires or cables when pulling.
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Sigma's Plastic Insulating Bushings are used on the end of Rigid conduit, IMC and other threaded connectors to provide a smooth well rounded bearing surface to protect wires or cables when pulling. These non-metallic bushings meet the requirements of the National Electric Code (NEC).