Plasticoid M35 Green Neoprene Stoppers are pre-dilled with one hole. 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, exhibit good resiliency and shelf life. Green Neoprene Stoppers withstands petroleum products and oils as well as most inorganic acids and bases. Stoppers are a highly visible green color for easy identification.
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