Can fiber optic cables be sealed in plastic
Coating is an outer plastic layer applied to the cladding of a fiber optic cable for mechanical protection. Many NEMA and IP-rated potted seals, grommets and cable glands can shield fiber optic components from water spray or temporary submersion at a limited depth, but they fall short of a moisture-tight hermetic seal and will allow gases. However, the sealing method used inside these closures largely determines the long-term reliability of the fiber connection.
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