Growth has been the hallmark of Niagara Caps & Plugs since opening its doors in 1953 as a manufacturer of injection-molded plastics. Building upon our early success as a quality molder, Niagara's reputation as a reliable and dependable partner expanded. Taking pride in being a privately held, American-owned company, Niagara took advantage of a niche market for specialty parts and eventually developed a proprietary line of industrial and protective plastic closures in the late 1950s.
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