Flexible ultrahigh-frequency cables have a coax cable Construction, where the inner and outer conductors are kept apart by a dielectric. This dielectric is applied by a special manufacturing process. The outer conductors have an annular corrugation. The corrugation troughs press into the dielectric, thereby sealing this cavities. This prevents any penetrated water from advancing through annular-corrugated cables. The jacket for these cables is made of black abrasion-resistant PE. This material is halogen-free and UV-resistant. As an optional, a flame-resistant version is available.