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3. Mechanical damage caused by individuals, tools, or other outside agents. <br />4. Changes in sealant appearance caused by accumulation of dirt or other <br />atmospheric contaminants. <br />PART 2 — PRODUCTS <br />2.1 MANUFACTURERS <br />A. See Editing Instructions No. 1 and No. 2 in the Evaluations for cautions about naming <br />manufacturers and products and in coordinating requirements in this Section with <br />other Part 2 articles. <br />Available Products: Subject to compliance with requirements, products that may be <br />incorporated into the Work include, but are not limited to, products listed in other <br />Part 2 articles. <br />2.2 MATERIALS. GENERAL <br />A. Compatibility: Provide joint sealants, backings, and other related materials that are <br />compatible with one another and with joint substrates under conditions of service and <br />application, as demonstrated by sealant manufacturer, based on testing and field <br />experience. <br />B. Colors of Exposed Joint Sealants: As selected by Architect from manufacturer's full <br />range. <br />2.3 ELASTOMERIC JOINT SEALANTS <br />Elastomeric Sealants: Comply with ASTM C 920 and other requirements indicated for <br />each liquid -applied chemically curing sealant specified, including those referencing <br />ASTM C 920 classifications for type, grade, class, and uses related to exposure and joint <br />substrates. <br />B. Stain -Test -Response Characteristics: Where elastomeric sealants are specified to be <br />nonstaining to porous substrates, provide products that have undergone testing according to <br />ASTM C 1248 and have not stained porous joint substrates indicated for Project. <br />C. Suitability for Contact with Food: Where elastomeric sealants are indicated for joints <br />that will come in repeated contact with food, provide products that comply with <br />21 CFR 177.2600. <br />D Single -Component Nonsag Polysulfide Sealant: <br />1. Available Products: <br />07900-5 <br />