Examples from the Web for water seal
Following the hot-water canner in simplicity of construction and manipulation is the water-seal cooker.Every Step in Canning|Grace Viall Gray
The flanges of the cover were sufficiently long to dip into a water-seal surrounding the tank.The Preparation of Plantation Rubber|Sidney Morgan
To make a trap with what is known as a water-seal, the U pipe is turned into an S fallen forward, .The Library of Work and Play: Housekeeping|Elizabeth Hale Gilman
It bubbles through the water in the washer, which therefore also serves as a water-seal, and passes thence to the gasholder.
These ash-pits are themselves provided with an overflow consisting of a siphon-tube forming a water-seal.Gas-Engines and Producer-Gas Plants|R. E. Mathot