The new technical article from Electri-Flex discusses the three types of shielding conduit that protects against EMI/RFI.

Shielded Conduit Protects Against RFI/EMI
Three kinds of shielding provide maximum choice

Introduction
Many applications require shielding effectiveness from RFI and EMI interference. Stray voltage, current, and high frequency noise can damage circuits, interrupt performance, and initiate potentially dangerous actions. Shielding reduces these potential problems. Shielded conduit, especially where flexibility is required, provides a significant solution for the engineer.

Electri-Flex Company manufactures a broad line of conduits that are designed to protect sensitive circuits from outside interference in a variety of applications. These applications are found in aerospace, communications, and many other industries where commercial off the shelf (COTS) products are acceptable. This paper discusses three different conduit types that are designed for high-performance shielding applications. They are Braided Shield; Interlocked Bronze Strip Inner Core; and Interlocked Bronze Strip with Braided Shield, and can be classified as "good," "better," and "best" solutions to provide effective shielding from RFI and EMI interference.

Click here to read the  entire article:

http://www.electriflex.com/wp-content/uploads/2017/02/Shielding-Conduit-Technical-Article.pdf