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For the plant of similar name, see Ferula.
Look up ferrule in Wiktionary, the free dictionary.
RHOL wire rope terminated with Thimbles and ferrule
Picco pipe with nickel silver ferrule
A ferrule (a corruption of Latin viriola "small bracelet", under the influence of ferrum "iron") is a name for types of metal objects, generally used for fastening, joining, or reinforcement. They are often narrow circular rings of metal, or less commonly, plastic.
Most ferrules consist of a circular clamp used to hold together and attach fibers, wires or posts, generally by crimping, swaging, or otherwise deforming the ferrule to permanently tighten it onto the parts that it holds.
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