Loose tube construction, tubes jelly filled, elements (tubes and filler rods) and water blocking yarns laid up around metallic central strength member, polyester yarns used to bind the cable core, water blocking tape, then steel tape and LSZH outer sheath.
It can withstand harsh environments such as moisture, temperature variations, and is resistant to ammonia, chlorine, salt spray, acid rain, ultraviolet rays and more.

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DS-QFV-CKS4L/3000M

Single mode flame retardant optical fiber 3000M