Same as R6200, except with two pre-drilled holes, regular length. Solid regular length. Black rubber. For all general laboratory and other uses. Dimensions in accordance with NBS specifications. Sold only by the pound. Plasticoid
Pre-dilled with two holes. These stoppers are the same physical dimensions as our black rubber stoppers, but can be used in areas where rubber would be attacked by reagents or solvents. Synthetic, neoprene stoppers contain no free sulfur and exhibit good resiliency and shelf life. Withstand petroleum products and oils as well as most inorganic acids and bases. Stoppers are green for easy identification. Plasticoid