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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Ferrule

A metal cap placed at the end of a post for strength and protection against weathering of the end grain.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

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)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

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).
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References in periodicals archive ?
Use Tape to Avoid Sealing Ferrules Together--Sometimes finishing ferrule wraps with epoxy can seal together two separate sections of the rod blank.
The following method is recommended by most manufacturers when the disassembly and reassembly of Small Bore Twin Ferrule Compression Fittings is required.
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.
Type Four is based on board-to-board coupling for perpendicular connected substrates (as used for mother-to-daughter boards) which is achieved with ferrules in latchable housings, using butt coupling multilayer waveguide arrays.
* 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.
The new Optical Ferrule Production System is based on Nissei's PN-series all-electric press used for molding fine-pitch connectors.
Place the appropriate column nut and ferrule on the column.
The syringes require tiny Teflon ferrules to seal removable needles into the stainless steel housing glued to the syringe bodies.
WANNER INTERNATIONAL reports it has added Hydra-Cell G25 and G35 pumps to its list of models available in 316L stainless steel, with Tri-Clamp ferrules and polished internals, for sanitary applications.