X-cord

Itkis ME, Chi X, Cordes AW, Haddon RC (2002) Magneto-opto-electronic bistability in a phenalenyl-based neutral radical. Science 296 1443-1445... 

RDX, PETN, HNS or DIP AM), with a minimum of 19685 ft/sec. Sometimes termed mild detonating cord in smaller diameters, it may be wrapped with a variety of plastics or textiles for partial or complete confinement of the detonation. The expl core is clad in a seamless, continuous metal sheath of Pb, A1 or Ag. X-cord is also available in square, rectangular or cross sections other than round. The cord may be initiated with a standard blasting cap. Not commonly employed in commercial blasting, X-cord is used in aircraft, aerospace, and industrial applications... 

X-Cord. Manufd by Explosive Technology, it is a metal-clad linear expl developed to sever materials, transmit an expl signal, or provide time delays in the microsecond range. Detonating velodties vary with the type of expl in the core... 

---