Superabsorbent polymers (SAP) are commonly used to protect outside plant optical fiber cables from water penetration and can be applied in various forms in different sections of the cable, such as:
- Over the central strength member, under the stranded buffer tubes
- Within the buffer tube core
- Over the buffer tubes, under the metallic shield (if part of the design)
- Over the metallic shield, under the outer sheath
The waterblocking functionality of SAP can be provided by direct application of powder or swellable hot melt adhesives, or by application of various substrates containing the SAP in either powder, liquid, or hot melt form.
Zappa Stewart has supported the power cable industry, as its most trusted supplier of SAP for over 20 years, by providing superior products and customer service.
Features & Benefits
|Dynamic water blocking capability
|Less weight, lower cable OD (compared to gel filled cables)
|Fast swelling speed
|Eliminates bio-hazard spills
|Solid gel strength
|Faster splicing and/or restoration