With so little context, it's difficult to say what's meant here.

There are plenty of ghits about shear bands (though I would ignore the geological/geophysical entries in this case).

The article about shear bands in aluminium/aluminum sheets posted as a web reference seems to be the most promising

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Note added at 3 hrs (2013-11-10 15:44:24 GMT)
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Further research now makes me reasonably certain that it is the adjustable collar used for tightening couplings between two pipes.

http://www.hynds.co.nz/shop/Drainage/Pipe Couplings/Shear Ba...
Shear bands in pipe couplings

This is a bit too exotic, I think

http://papers.sae.org/2010-01-0768/
Shear bands in the tyres of a lunar rover

Here are some more on pipe couplings
http://www.simplyplumbing.com/fernco-1051-88sr.html



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Note added at 4 hrs (2013-11-10 16:23:48 GMT)
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It's been around since at least 1790, when this book was published - here its a band around the wood trails of a cart applied for strengthening. Some of the other words in there are strange, to say the least.

http://tinyurl.com/m5j9qtm

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Note added at 4 hrs (2013-11-10 16:39:10 GMT)
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Here's a Tri-lingual patent:

4. Coupling as claimed in any one of claims 1 to 3,
characterised in that the sleeve casing (1) as a whole is a round cylinder in shape and, on its outside, adjacent to the respective sleeve ends (11, 12), has a respective shallow groove for reception of a narrow tension strip (21, 22), wherein the middle region of the sleeve casing (1) can be used to receive a broad shear band (23).

4. Kupplung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass der Muffenmantel (1) insgesamt rundzylindrisch ist und an seiner Außenseite, benachbart den jeweiligen Muffenenden (11, 12), je eine flache Nut zur Aufnahme eines schmalen Spannbandes (21, 22) aufweist, wobei der mittlere Bereich des Muffenmantels (1) zur Aufnahme eines breiten Scherbandes (23) genutzt werden kann.

4. Accouplement selon l'une des revendications 1 à 3, caractérisé en ce que l'enveloppe de manchon (1) est globalement ronde et cylindrique et présente sur son côté extérieur, à proximité de chacune des extrémités de manchon respectives (11, 12), une rainure plate pour le logement d'une bande de serrage (21, 22) étroite, la zone centrale de l'enveloppe de manchon (1) pouvant être utilisée pour le logement d'une bande de cisaillement (23) large.

Reference (with diagrams - it's part 23)
http://tinyurl.com/n92ka7t

I fear that calling it a Jubilee clip might be akin to calling a vacuum cleaner a Hoover.
I am posting this because I do not believe that 'band' does the item justice.

In many countries, Jubilee Clips tend to be known almost exclusively by their brand name, but elsewhere (where the brand is not so well known for example), they are known by generic names such as worm drive hose clip or hose clamp or hose clip. The Jubilee Clip dominated the market to the point where the brand name is often used instead of the generic term "hose clamp", particularly in the United Kingdom, Ireland and in some of the former British Colonies. It remains the term used in everyday speech in the UK and Ireland.
http://en.wikipedia.org/wiki/Jubilee_Clip