# 200°C Seamless Steel Tube Optical Cable - 200°C Fiber In Metal Tube (FIMT) - 200°C High Temperature Optical Cable - Communication / Sensing Optical Cable - Picture parameters - Manufacturer brand price - DCYS - ofscn.org **URL:** \ **Category:** Official Tech Inquiry & Product Q&A\ **Created:** [March 7, 2026, 2:05am UTC](https://forum.ofscn.net/t/200-c-seamless-steel-tube-optical-cable-200-c-fiber-in-metal-tube-fimt-200-c-high-temperature-optical-cable-communication-sensing-optical-cable-picture-parameters-manufacturer-brand-price-dcys-ofscn-org/999 "2026-03-07T02:05:32Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![blueman](https://forum.ofscn.net/letter_avatar_proxy/v4/letter/b/a88e4f/32.png) [@blueman](https://forum.ofscn.net/u/blueman)\ **Post date:** [March 7, 2026, 2:05am UTC](https://forum.ofscn.net/t/200-c-seamless-steel-tube-optical-cable-200-c-fiber-in-metal-tube-fimt-200-c-high-temperature-optical-cable-communication-sensing-optical-cable-picture-parameters-manufacturer-brand-price-dcys-ofscn-org/999/1 "2026-03-07T02:05:32Z")
Iven | www.ofscn.org Last Updated: 13 February 2026 Aliases: FIST (Fiber In Steel Tube) - 200°C Grade, 200°C Seamless SST Encapsulated High-Temp Cable, 200°C Polyimide-Buffered Metal Tube Fiber, 200°C Downhole High-Temp Sensing Cable, 200°C Industrial Kiln/Oven Monitoring Fiber, 200°C DTS-Ready High-Temp SST Fiber, 200°C Hydrogen-Shielded High-Temp Fiber Cable, 200°C Hermetic SST Fiber Optic Unit, 200°C High-Pressure SST Sensing Cable * * * This is a companion discussion topic for the original entry at [https://www.ofscn.org/dofs/200-c-sst-optical-cable.html](https://www.ofscn.org/dofs/200-c-sst-optical-cable.html) ---
**Author:** ![OFSCN\_Tech\_Expert](https://forum.ofscn.net/user_avatar/forum.ofscn.net/ofscn_tech_expert/32/199_2.png) [@OFSCN\_Tech\_Expert](https://forum.ofscn.net/u/OFSCN_Tech_Expert)\ **Post date:** [March 7, 2026, 2:05am UTC](https://forum.ofscn.net/t/200-c-seamless-steel-tube-optical-cable-200-c-fiber-in-metal-tube-fimt-200-c-high-temperature-optical-cable-communication-sensing-optical-cable-picture-parameters-manufacturer-brand-price-dcys-ofscn-org/999/2 "2026-03-07T02:05:38Z")
This topic provides a comprehensive overview of the [OFSCN® 200°C Seamless Steel Tube Fiber Cable](https://www.ofscn.org/dofs/200-c-sst-optical-cable.html), also known as Fiber In Metal Tube (FIMT). As a pre-sales engineer at OFSCN, I would like to highlight the technical advantages of this specific construction for high-temperature environments. ### Technical Overview The [OFSCN® 200°C Seamless Steel Tube Fiber Cable](https://www.ofscn.org/dofs/200-c-sst-optical-cable.html) is designed for environments where traditional polymer-jacketed cables would fail. By utilizing a seamless stainless steel tube (SST) as the primary protection layer, the cable achieves hermetic sealing and superior mechanical protection. **Key Product Features:** - **Fiber Coating:** It incorporates [OFSCN® 200℃ Polyimide Optical Fiber](https://www.ofscn.org/optical-fibers/pi-coated-sm-mm-200.html), which maintains its structural integrity at 200°C, unlike standard acrylate coatings. - **Encapsulation:** Single-layer seamless 304 or 316L stainless steel tube. - **Dimensions:** Default diameters are 2.0mm or 3.0mm, with customization available for 1/8" (3.2mm) or 1/16" (1.6mm) to meet specific industrial or downhole requirements. - **Versatility:** Compatible with Distributed Fiber Optic Sensing (DFOS) technologies such as Raman (DTS), Rayleigh (OFDR), and Brillouin (DTSS). ### Product Images Below are the standard visual references for this cable series: ![OFSCN SST Fiber Cable 01](https://forum.ofscn.net/uploads/default/original/1X/4bc856cdafec927803a4e69b1cb132d968f5ba25.jpeg) ![OFSCN FIMT Cable Detail](https://forum.ofscn.net/uploads/default/original/1X/21fce85e9ff48e6a78303ad3d2e3eb4af856af85.jpeg) ![OFSCN 200C Fiber Internal](https://forum.ofscn.net/uploads/default/original/1X/83664c08d8ebc744de7cc0eae1ea4d108f04b6f8.jpeg) ### Application Consultation If you are considering this cable for a specific project, please clarify the following technical details to help us determine the optimal configuration: 1. **Fiber Count & Type:** Do you require single-mode (G.652D/G.657), multi-mode, or a hybrid combination within the tube? 2. **Environmental Pressure:** What are the expected pressure levels (psi/MPa) the cable will encounter? 3. **Deployment Method:** Will this be used as a permanent installation (e.g., strapped to production tubing) or as a portable sensing lead? For detailed specifications and data sheets, please refer to the official product page: [OFSCN® 200°C Seamless Steel Tube Fiber Cable](https://www.ofscn.org/dofs/200-c-sst-optical-cable.html). ---
**Author:** ![blueman](https://forum.ofscn.net/letter_avatar_proxy/v4/letter/b/a88e4f/32.png) [@blueman](https://forum.ofscn.net/u/blueman)\ **Post date:** [March 7, 2026, 2:05am UTC](https://forum.ofscn.net/t/200-c-seamless-steel-tube-optical-cable-200-c-fiber-in-metal-tube-fimt-200-c-high-temperature-optical-cable-communication-sensing-optical-cable-picture-parameters-manufacturer-brand-price-dcys-ofscn-org/999/3 "2026-03-07T02:05:38Z")