ferrule

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ferrule

, ferule
1. a metal ring, tube, or cap placed over the end of a stick, handle, or post for added strength or stability or to increase wear
2. a side opening in a pipe that gives access for inspection or cleaning
3. a bush, gland, small length of tube, etc., esp one used for making a joint

Ferrule

A metal cap placed at the end of a post for strength and protection against weathering of the end grain.

ferrule

[′fer·əl]
(design engineering)
A metal ring or cap attached to the end of a tool handle, post, or other device to strengthen and protect it.
A bushing inserted in the end of a boiler flue to spread and tighten it.
(engineering)

ferrule

A metal sleeve, esp. one which is fitted with a screwed plug; serves as an opening on the side of a pipe providing access for inspection or cleaning the interior of the pipe.

ferrule

A ceramic, plastic or stainless steel part of a fiber-optic plug that holds the end of the fiber and precisely aligns it to the socket. The fiber is inserted into the ferrule and cemented with an epoxy or adhesive, which gives it long-term mechanical strength and prevents contamination from the weather. Connectors may also use crimped ferrules that do not require cement. The ferrule is the most important and costly part of a fiber connector. If its length, hole centering and inside and outside diameters are not exact, a poor connection will result. See fiber optics glossary.


Fiber-Optic Ferrule
With the naked eye, one cannot see the tiny opening for the optical fiber. It is only visible under a magnifying glass. The epoxy or adhesive is squeezed into the ferrule before the fiber is inserted (bottom right).
References in periodicals archive ?
The following method is recommended by most manufacturers when the disassembly and reassembly of Small Bore Twin Ferrule Compression Fittings is required.
If tension wasn't present (the lower band could be wiggled) we would need to correct the stock by bedding it or, alternately, by lowering the stock ferrule slightly.
Once you get the sections apart, take time to clean all male and female ferrules, to decrease the chance of it happening again.
According to USP's Frequently Asked Questions for General Chapter <1> Injections, Section on Labeling on Ferrules and Cap Overseals (August 4, 2010): "For those manufacturers who wish to maintain the information printed on the cap or ferrule, rationale must be provided to the FDA explaining why the instruction addressed in the statement in considered to be life threatening.
The company has also evolved its range of ferrules to include a specifically designed ferrule for welding on to tanks and vessels.
This is accomplished by using micro ferrules (machined slots for pin alignment required) designed for small array coupling footprints.
Push-in spring-cage technology to allow rigid and flexible wires with ferrule to be connected quickly without tools.
Its three components, the nut, body and gasket ring or ferrule use a friction grip on the tube.
Ceramic ferrules used in fiber-optic connectors can be produced from zirconia powder with a plastic binder in a specialized injection machine available from Nissei America Inc.
The model RFA-4009-20 cushion gripped crimp handle is designed to deliver piston-driven compression for installation of crimp ferrules on large diameter cables.