Armored fiber optic cable is a fiber core wrapped with a layer of protective “armor” (stainless steel armored tube) of the cable, this stainless steel armored tube can effectively protect the core from animal bites, moisture erosion or other damage. With a durable protective layer, they are ideal for harsh or high-traffic environments. The armor typically consists of. 5-Layer Heavy-Duty Architecture: Features a tight-buffered fiber, helical stainless steel armored tube, DuPont Kevlar aramid yarn, metal braid, and an outer jacket for maximum crush resistance. Temperature: -100 °F - 350 °F. Available in singlemode and multimode options with LC, SC, and. Fibertronics, Inc.