Size 00 Pure Gum Rubber Stoppers will plug bottles, lab vials and other openings Pure Gum Rubber useful to 220º F and in applications with moderate chemicals, alocohols and organic acids. Do not use with strong acids, fats, grease or hydrocarbons.
All products were great
Sam M, Pacific, MO - 6/10/2016
The product was as advertised. The company was fast in delivery.