The 53B buttress thread is a robust, specialized screw thread commonly found on Nalgene laboratory containers. Designed for heavy-duty use, this thread type provides an exceptionally secure seal, making it ideal for applications that require leak-proof performance, even under demanding conditions. The buttress design features sloped thread walls that distribute stress more evenly, enhancing durability and resistance to stripping during repeated opening and closing.

Often used with containers storing reagents, chemicals, or samples, the 53B thread ensures a secure and leak-proof closure. Its precise engineering and compatibility with chemically resistant materials support Nalgene’s reputation for high-quality labware trusted in research and industrial settings.