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  • Parachute cord

    serch.it?q=Parachute-cord

    A 10 ft (3 m) coil of commercial parachute cord The sheath of this commercial parachute cord is braided from 32 strands and the core made up of seven two-ply yarns. The scale is in inches. Genuine MIL-SPEC MIL-C-5040 Type III Paracord has 7 inner cords each made up of 3 strands.Parachute cord (also paracord or 550 cord when referring to type-III paracord) is a lightweight nylon kernmantle rope originally used in the suspension lines of parachutes. This cord is useful for many other tasks and is now used as a general purpose utility cord by both military personnel and civilians. This versatile cord was even used by astronauts during the 82nd Space Shuttle mission to repair the Hubble Space Telescope. The braided sheath has a high number of interwoven strands for its size, giving it a relatively smooth texture. The all-nylon construction makes paracord fairly elastic. Current technical standards for the manufacture of cord for use in parachutes are published by the Parachute Industry Association. The US military MIL-C-5040H standard required the material to be nylon. Similar styles of cord are manufactured with other materials such as polyester.

  • Parachute Cord

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  • Bungee cord

    serch.it?q=Bungee-cord

    Bungee cords equipped with metal hooks A child on a bungee cord device in Moscow, Russia A bungee cord (sometimes spelled bungie), also known as a shock cord - and in Australia, an occy strap or octopus strap - is an elastic cord composed of one or more elastic strands forming a core, usually covered in a woven cotton or polypropylene sheath. The sheath does not materially extend elastically, but it is braided with its strands spiralling around the core so that a longitudinal pull causes it to squeeze the core, transmitting the core's elastic compression to the longitudinal extension of the sheath and cord. Specialized bungees, such as some used in bungee jumping, may be made entirely of elastic strands. Bungee cords have been used to provide a lightweight suspension for aircraft undercarriages from before World War I, and are still used on many small homebuilt aircraft where weight remains critical. Bungee cords were also used in parachuting to assist in opening the old-style parachute container after the ripcord was pulled. Today, bungee cords are most often used to secure objects without tying knots and to absorb shock.

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