General Purpose Glass Reinforced Plastic (GRP)

LIGHTLINE® is a non-metallic composite designed primarily for use as a central strength member or peripheral strength element in fiber optic cables. This GRP is produced with E-glass fibers and vinylester or epoxy resin. Its high glass transition temperature (up to 150° C) makes LIGHTLINE ideal for high temperature environments.

  • Inter- and intrabuilding installations
  • High temperature environments
  • OPGW
  • ADSS and other aerial installations
  • Premise Distribution
  • Underground - direct burial and conduit
Features & Benefits
  • All dielectric
  • High elastic modulus
  • High flexibility
  • Coefficient of Thermal Expansion(CTE) similar to optical fiber
  • Custom profiles and lengths available
  • Geometrical accuracy and smooth surface for ease of extrusion, fitting and quality
  • Wide range of sizes available

Minimum Technical Specifications
  • Tensile Strength
  • Elastic Modulus
  • Flexural Modulus
  • Elongation at break
  • Coefficient of Thermal Expansion (CTE)
  • Tg (Glass Transition)

> 1.25 GPa
> 50 GPa
>48 GPa
> 2.5%
5.9 x 10-6
110° - 130° C or 150° C (MTO)
  • Minimum Bend Radius
  • Diameter Tolerance
  • Minimum Order Quantity
  • Maximum Length
40 x diameter
+/- 5%

NEPTCO's LIGHTLINE® Products are available in a number of different constructions. Click on the links below to view pdf copies of select data sheets.

Product Name
LIGHTLINE GRP with tightest diameter tolerances


Standard LIGHTLINE with specialized adhesive coatings
Flat LIGHTLINE (LFH/F) Rectangular composite used for crossply sheathing and ballistic protection

Click here to view Material Safety Data Sheets (MSDS) in pdf format.

NOTE: You must have Acrobat Reader installed on your computer in order to view pdf files. You may obtain a free copy of the reader by clicking on the link below.

All dielectric,alternative to corrugated armoring,ANSI/EIA/TIA-455-82B,ASTM D4565,central strength member,Coefficient of thermal expansion,Composite strength elements,cross-ply sheathing,CTE,customized upjacketing services,
direct burial and conduit,dry core cables,EAA coatings,E-glass composite,epoxy resin,fiber optic cable components,Fiber optic cable protection,fiber optic cables
Fiberglass reinforced plastic,fiberglass rod,flexible roving,Flexural Modulus,FRP,Glass reinforced plastic,GRP,GRP rod,High elastic modulus,high modulus,high temperature environments,hydrogel,hydrolytic stability,lightly cross linked polyacrylates, Modulus of elasticity,Negative coefficient of thermal expansion
non-metallic, non-metallic strength element, Peripheral strength member,
Premise distribution,Reinforcing rods,Rodent protection,Signal integrity,Strength members,super-absorbent cable components,super-absorbent matrix, super-absorbent polymer,Tensile strength,thermoplastic cross-linked polymer,
Thermoplastic matrix,thermoplastic polymer coating,Thermosetting,Vinylester
viscoelastic gel,Water blocking coating,Water Swellable Components,SAP