The standard outer diameter of these ceramic ferrules is typically 2. 5 millimeters (for SC and FC connectors) or 1. A ferrule is a mechanical component, typically a narrow circular ring, cap, or sleeve, engineered for fastening, joining, sealing, or reinforcement purposes. These small parts are generally made from metal, such as copper or brass, but plastic and ceramic versions are also common depending on the. High-Precision Fiber Optic Ferrules (The Focus of This Guide) This is the high-technology application. Its entire purpose is to ensure that the $8$-micron core of one fiber lines up perfectly. Our Standard Ferrules are typically used as sub-components within fiber optic connectors, but can also be integrated in various specialized applications. Ferrules are specially designed of specific materials that are able to withstand heat shock as well as high temperatures without melting or breaking.
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