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A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to maintain the fire-resistance rating of a wall or floor assembly intended to impede the spread of fire and smoke.
Ceramic fibre used as packing to support firestop silicone caulking Packing is the process and/or the materials used in filling both service penetrations and building joints with backer materials as approved components within a firestop .
Fire blocking or firestopping is a system of supplemental components in a wood-framed wall or ceiling, which prevents the rapid propagation of fire within a combustible framing cavity to other areas. Description and function
Perfluoro(2-methyl-3-pentanone) is a fluorinated ketone with the structural formula CF 3 CF 2 C(=O)CF(CF 3) 2, a fully-fluorinated analog of ethyl isopropyl ketone.It is used as an electronics coolant liquid and fire protection fluid sold commercially by 3M under brand names such as Novec 1230, Novec 649, and FK-5-1-12.
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F". The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
As of 2019, 3M produces approximately 60,000 products, [71] and has four business groups focused on safety and industrial, transportation and electronics, health care, and consumer products. [72] 3M obtained its first patent in 1924 and acquires approximately 3,000 new patents annually. The company surpassed the 100,000-patent threshold in 2014.
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