That we're only filling the casing, or we're filling the casing and the annulus.
From the sacbee.com
The plastic casing may not look much but there's a solid metal frame underneath.
From the telegraph.co.uk
He said that a casing on the exit door handle fell off, which set off the alarm.
From the abcnews.go.com
Why is the integrity of the casing or the ground around the well hole important?
From the theatlantic.com
If any blades escape from the casing the engine design doesn't get CAA approval.
From the economist.com
These consist of the nib unit, an ink reservoir chamber, and an external casing.
From the en.wikipedia.org
Carbon and magnesium in the casing reacts with the liquid to produce electricity.
From the time.com
We took out the vinegar, used a natural casing, and cured it, and there it was.
From the jsonline.com
The problem is no longer the cost of the ceramic itself, but of the metal casing.
From the economist.com
More examples
Shell: the housing or outer covering of something; "the clock has a walnut case"
The outermost covering of a pneumatic tire
The enclosing frame around a door or window opening; "the casings had rotted away and had to be replaced"
(cased) covered or protected with or as if with a case; "knights cased in steel"; "products encased in leatherette"
A cartridge, also called a round, packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. ...
Casing is large diameter pipe that is assembled and inserted into a recently drilled section of a borehole and typically held into place with cement.
Molding (USA) or moulding (AUS, CAN, UK) is a strip of material with various cross sections used to cover transitions between surfaces or for decoration. It is traditionally made from solid milled wood or plaster but may be made from plastic or reformed wood. ...
Casing or sausage casing is the material that encloses the filling of a sausage. Casings are typically divided into two categories, natural and artificial.
The casing of a submarine is a light metal structure, usually incorporating a deck, built-up and-over the upper surface of the vessel's pressure hull.