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).
Insulating bushings provide a smooth surface that protects wires
Used on the end of 1-1/2-in Rigid conduit, IMC or other threaded connectors