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Outer jacket.  This flexible insulating material is also called a sheath, typically a soft plastic material.

  • On single-fiber cables (as diagramed above), this jacket OD is usually 2-3mm in diameter, and can be stripped using common wire-strippers of the appropriate gauge.
  • When selecting the proper wire-stripper gauge, it is important to consider the layer underneath (in this case, the Aramid Yarn):  you do not want to damage any of the yarn fibers, as they play an important role in connector tensile strength.
    • After removing the Jacket, observe the Aramid Yarn fibers at the strip point.  Are they damaged?  Are any of them cut?   Even a small % of cut fibers will significantly reduce finished-product pull-strength.  If you see cut yarn fibers, likely you need to use a larger gauge wire stripper.
  • The edge of the jacket, after stripping, should be cut clean—not torn or ripped.


READ THE BLOG: Good stripping techniques for your fiber optic cable assembly process


Additional resources from the FOC team include:



Have questions about this FOC Tip?

Contact FOC with questions at: (800) 473-4237 / 508-992-6464 or email: FiberOpticCenter@focenter.com and we will respond ASAP.







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When customers have technical questions, manufacturers often refer them to FOC as the technical expert of their equipment. FOC is resource of the know-how, the actual procedures and processes that go with each piece of equipment. It is the process that determines product meeting specifications on time. Decades of global, practical cable assembly production, fiber applications and specialty applications experience by our technical experts is out there, working daily with our customers, to improve their processes.