sleeve

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sleeve

1. a tubular piece that is forced or shrunk into a cylindrical bore to reduce the diameter of the bore or to line it with a different material; liner
2. a tube fitted externally over two cylindrical parts in order to join them; bush
3. a flat cardboard or plastic container to protect a gramophone record

Sleeve

A tube or tube-like part fitting over or around another part; a pipe used to provide openings for the installation of electric and plumbing services, used in solid concrete floors through which the services must pass. Also called a sleeve chase.

sleeve

[slēv]
(electricity)
The cylindrical contact that is farthest from the tip of a phone plug.
Insulating tubing used over wires or components. Also known as bushing; sleeving.
(engineering)
A cylindrical part designed to fit over another part.

pipe sleeve

pipe sleeve, 1
1. A cylindrical insert, placed in a form for a concrete wall, in a location where a pipe is to pierce the wall; the insert prevents concrete from flowing into the cylindrical opening.
2. A pipe coupling.