Conductors Solid, soft drawn, annealed bare copper
Insulation Solid, virgin high-density polyethylene, with standard telephone industry color-coding
Cable Core Assembly Twisted pairs with varying lays
Inner Jacket Black, low density, high molecular weight virgin polyethylene
Shielding Options
0.008" (0.203 mm) aluminum tape shield with corrosion-resistant, blue tinted ethylene copolymer coating on both sides, applied longitudinally with overlap.
Gopher-resistant 0.005" (0.127 mm) corrugated copper-clad stainless steel or 0.005" copper clad alloy tape, applied longitudinally with overlap.
Outer Jacket Black, low density, high molecular weight virgin polyethylene
Filling The entire cable within the outer jacket is flooded with a petrolatum-polyethylene gel filling compound.