They can be made of steel, gas-tight brickwork or concrete.    From Wordnik.com.  [8. The desulphurizing apparatus] Reference

When the paste dries, you will have a lasting, gas-tight seal.    From Wordnik.com.  [9. Pest control using fumigants] Reference

Tests on reducing the requirements for gas-tight plaster are under way.    From Wordnik.com.  [4. Biogas extension work] Reference

The part below the lid must be gas-tight, above, it must be water-tight.    From Wordnik.com.  [6. Construction of the biogas plant] Reference

In that case is a gas-tight suit and closed circuit breathing apparatus.    From Wordnik.com.  [The Satan Bug]

The new burner was screwed down over this, making a gas-tight connection.    From Wordnik.com.  [Lippincott's Magazine of Popular Literature and Science, Vol. XVI., December, 1880.] Reference

The densely packed anode wires and the cathode planes are enclosed in a gas-tight chamber.    From Wordnik.com.  [The Nobel Prize in Physics 1992] Reference

For the study, researchers rounded up 28 popular houseplants and put them in gas-tight jars.    From Wordnik.com.  [Which houseplants are best for better air quality?] Reference

It can be made gas-tight and thus be installed in pieces of equipment in any desired mounting position.    From Wordnik.com.  [4. Electrical Energy] Reference

Gas tightness of the upper part is achieved by a crack-free structure and a gas-tight inner surface plaster.    From Wordnik.com.  [6. Construction of the biogas plant] Reference

All guards on internal patrol had to make their rounds in gas-tight suits with a closed circuit breathing apparatus.    From Wordnik.com.  [The Satan Bug]

The training is given in the gas-tight room of Building No. 17, or in similar rooms at sub-stations (Fig. 2, Plate XII).    From Wordnik.com.  [Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171] Reference

Lewis magazines should be kept in some form of box, the joints of which are made as gas-tight as possible with flannelette.    From Wordnik.com.  [Military Instructors Manual] Reference

The objection to earthenware pipes is that they are not strong enough for the purpose, break easily, and cannot be made gas-tight.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

Additionally fumigants are used in sealed buildings, chambers and on ships, in gas-tight containers or wagons to disinfect produce.    From Wordnik.com.  [9. Pest control using fumigants] Reference

It too was quite dry, though that had not been a major worry anyhow; it was completely waterproof, and, for that matter, gas-tight.    From Wordnik.com.  [Spock Must Die]

Resistance to phosphine was first discovered in countries in which space fumigation was performed in stores which were not gas-tight.    From Wordnik.com.  [9. Pest control using fumigants] Reference

The gas-tight gallery used for testing the lamps, consists of a rectangular conduit (Fig. 2, Plate X), having sheet-steel sides, 6 mm.    From Wordnik.com.  [Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171] Reference

The excreta are passed directly into stone or metal water - and gas-tight pails, which, after filling, are hermetically covered and removed to the places for final disposal.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

On January 1, 1943, three gas-tight doors were ordered for Crema 2.    From Wordnik.com.  [Deborah Lipstadt’s Blog] Reference

On March 31, 1943, one gas-tight door was ordered for Crema 3 was ordered.    From Wordnik.com.  [Deborah Lipstadt’s Blog] Reference

They then wore breathing apparatus and gas-tight suits to get into the room.    From Wordnik.com. Reference

Lucifer Furnaces has launched a gas-tight oven for use with inert atmosphere.    From Wordnik.com.  [Manufacturingtalk - manufacturing industry news] Reference

On February 13, 1943 an order was issued for twelve "gas-tight doors of 30 / 40 cm.".    From Wordnik.com.  [Deborah Lipstadt’s Blog] Reference

Soldered and other gas-tight mechanical connections are used for the signal circuits.    From Wordnik.com.  [Stereophile RSS Feed] Reference

"Fire crews in gas-tight suits carried out tests and identified the chemical was a floor sealant.".    From Wordnik.com.  [Evening Standard - Home] Reference

This model uses high-tech gas-tight type earplugs, with sound quality perfectly restored through the headphones.    From Wordnik.com. Reference

The isolators are brazed into the feed pipeline using Kovar expansion match fittings and they produce a gas-tight seal.    From Wordnik.com.  [Manufacturingtalk - manufacturing industry news] Reference

He has shown balloonists how to make a perfectly gas-tight material, and has raised powerful petroleum motors in a balloon with safety.    From Wordnik.com.  [The Dominion of the Air; the story of aerial navigation] Reference

(D) and the gas-tight lid (E).    From Wordnik.com.  [6. Construction of the biogas plant] Reference

The gasplant is closed by a gas-tight lid (4).    From Wordnik.com.  [3. Explanation of terms] Reference

(2) The joints and parts of the furnace must be gas-tight.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

(6) The junctions between the bowl and container, and the container and trap, are usually not gas-tight.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

(3) Short, direct, clean, well-flushed, gas-tight branch pipes to connect receptacles with vertical pipes.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

"That door is gas-tight.    From Wordnik.com.  [The Satan Bug]