148 AFLglobal.com 1 (800) 890-8878 © 2018, AFL, all rights reserved. PP-1-00021, R evision 7, 3.11.2026 Specications are subject to change without notice. 148 Specialty Fiber Optic Cable As the inventor and owner of the technology for placing optical fibers into stainless steel tubes, AFL offers a range of tube sizes and fiber counts for a variety of applications. Each tube is flooded with a thixotropic filling compound and hermetically sealed to protect the enclosed fibers from environmental degradation. This product is sometimes referred to as FIST (Fiber in Steel Tube) or FIMT (Fiber in Metal Tube). Specifications OPTION NUMBER MAXIMUM FIBER COUNT OUTSIDE DIAMETER inches (mm) INSIDE DIAMETER inches (mm) WALL THICKNESS inches (mm) 1 3 0.046 (1.17) 0.036 (0.91) 0.005 (0.127) 2 4 0.052 (1.32) 0.042 (1.07) 0.005 (0.127) 3 4 0.055 (1.40) 0.039 (1.00) 0.008 (0.200) 4 6 0.065 (1.65) 0.049 (1.25) 0.008 (0.200) 5 6 0.071 (1.80) 0.055 (1.40) 0.008 (0.200) 6 8 0.074 (1.88) 0.058 (1.47) 0.008 (0.200) 7 8 0.079 (2.00) 0.063 (1.60) 0.008 (0.200) 8 12 0.092 (2.33) 0.076 (1.93) 0.008 (0.200) 9 16 0.095 (2.40) 0.079 (2.00) 0.008 (0.200) 10 16 0.098 (2.49) 0.082 (2.08) 0.008 (0.200) 11 24 0.118 (3.00) 0.102 (2.60) 0.008 (0.200) 12 36 0.125 (3.20) 0.109 (2.80) 0.008 (0.200) 13 60 0.142 (3.60) 0.126 (3.20) 0.008 (0.200) 14 72 0.150 (3.80) 0.134 (3.40) 0.008 (0.200) 15 72 0.158 (4.00) 0.142 (3.60) 0.008 (0.200) 16 72 0.165 (4.20) 0.150 (3.80) 0.008 (0.200) 17 96 0.189 (4.80) 0.165 (4.20) 0.012 (0.300) Applications • OPGW • Subsea Cables • Sensor Cables • Umbilical Cables • Towed Arrays Cable Components Stainless Steel Fiber Optic Tubes Stainless Steel Tube Gel Fiber