RL14 tapered corks are medium to large natural cork stoppers made from 100% sustainably harvested cork, designed to seal medium to large openings with a secure, reliable fit. The tapered profile — wider at the top, narrowing toward the base — allows a single stopper to accommodate a range of opening sizes, including containers with nonuniform openings where a straight-sided plug would fail to seal reliably. Natural cork compresses slightly on insertion, creating a snug seal without adhesives or tools, and its inherent flexibility means it conforms to minor variations in the opening. Whether referred to as end plugs, masking plugs, or hole fillers, these stoppers deliver dependable performance across every use. Each RL14 tapered cork measures 1-1/4in (31.8mm) at the top diameter, 1-1/64in (25.8mm) at the bottom diameter, and 1-1/4in (31.8mm) in length. Perfect for sealing glass and ceramic jars, laboratory glassware, medium to large containers, construction holes, masking applications, craft projects, science applications, and any industrial or commercial use requiring a reliable, natural plug.