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2. Stain-blocking primer - Wikipedia

   en.wikipedia.org/wiki/Stain-blocking_primer

   [2] [3] The ACI is calculated based on the amount of solvent in the primer, the volume of the room to be primed, the volatility of the solvent and the amount of primer to be applied. The calculations were made based on a 3,500 square feet (330 m 2) room and primer with coverage of 375 ft2/gallon.

3. Primer (paint) - Wikipedia

   en.wikipedia.org/wiki/Primer_(paint)

   Primer reduces the number of paint coats needed for good coverage and even color. A thin layer of paint may still be permeable to water. Water can permeate into the wood and cause warping, mildew, or dry rot. Primer improves the waterproofing of the finish. [4] Primers are not used as part of a wood stain treatment because they obscure the wood ...

4. Rust converter - Wikipedia

   en.wikipedia.org/wiki/Rust_converter

   Tannic acid chemically converts the reddish iron oxides into bluish-black ferric tannate, a more stable material. [2] The second active ingredient is an organic solvent such as 2-butoxyethanol (ethylene glycol monobutyl ether, trade name butyl cellosolve) that acts as a wetting agent and provides a protective primer layer in conjunction with an ...

5. Tubes and primers for ammunition - Wikipedia

   en.wikipedia.org/wiki/Tubes_and_primers_for...

   With quick firing guns (those using metallic cartridge cases) the case itself is fitted with the igniting medium; in England these are called primers. For small guns the case contains a percussion primer, usually a copper cap filled with a chlorate mixture and resting against an anvil. [2] The striker of the gun strikes the cap and fires the ...

6. Nebelwurfgerät - Wikipedia

   en.wikipedia.org/wiki/Nebelwurfgerät

   They were ejected out of each tube by Zündschraube C 23 [3] primer which was electrically fired from six push-buttons labeled Nebelkerzen, [4] these buttons being grouped in two sets of three, located in the turret to the left and right of the commander's position and forward of his cupola. No spare smoke grenades, primers or launcher tubes ...

7. Trap primer - Wikipedia

   en.wikipedia.org/wiki/Trap_primer

   A trap primer (or trap seal primer) is a plumbing device or valve that adds water to traps.The water seals in traps are needed to prevent sewer gases from entering buildings, but because this water is exposed to the air, it is subject to evaporation over time in infrequently used floor drains, leading to the release of sewer gas into the environment.