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  2. DAP Products - Wikipedia

    en.wikipedia.org/wiki/DAP_Products

    The resulting entity was renamed Dicks-Armstrong-Pontius, which was eventually shortened to the brand name DAP. [2] DAP was the first to the market with the introduction of latex caulk in 1964, and since then the company has introduced numerous other caulks, sealants, insulating foams and other patch and repair products.

  3. How to remove hard water deposits from your faucets and shower

    www.aol.com/remove-hard-water-deposits-faucets...

    Watch the video to learn how to remove hard water stains and build-up from faucets and shower heads. What is hard water? Hard water refers to water that contains a high amount of minerals.

  4. Diammonium phosphate - Wikipedia

    en.wikipedia.org/wiki/Diammonium_phosphate

    Diammonium phosphate (DAP; IUPAC name diammonium hydrogen phosphate; chemical formula (NH 4) 2 (HPO 4)) is one of a series of water-soluble ammonium phosphate salts that can be produced when ammonia reacts with phosphoric acid. Solid diammonium phosphate shows a dissociation pressure of ammonia as given by the following expression and equation: [2]

  5. Caulk - Wikipedia

    en.wikipedia.org/wiki/Caulk

    Caulk (also known as caulking and calking) [1] is a material used to seal joints or seams against leakage in various structures and piping. The oldest form of caulk consisted of fibrous materials driven into the wedge-shaped seams between boards on wooden boats or ships. Cast iron sewerage pipes were formerly caulked in a similar way.

  6. Sealant - Wikipedia

    en.wikipedia.org/wiki/Sealant

    A caulking sealant has three basic functions: It fills a gap between two or more substrates; it forms a barrier due to the physical properties of the sealant itself and by adhesion to the substrate; and it maintains sealing properties for the expected lifetime, service conditions, and environments.

  7. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

  8. CR-39 - Wikipedia

    en.wikipedia.org/wiki/CR-39

    CR-39 is made by polymerization of ADC in presence of diisopropyl peroxydicarbonate (IPP) initiator.The presence of the allyl groups allows the polymer to form cross-links; thus, it is a thermoset resin.

  9. Dissolved air flotation - Wikipedia

    en.wikipedia.org/wiki/Dissolved_air_flotation

    Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank basin.

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