As part of the Glass Packaging Institute (GPI) standards, the 38-400 thread type has become a cornerstone of modern packaging. Widely used across various industries, it appears in products such as spice jars, kombucha bottles, and cooking oil. In laboratory settings, it is trusted by brands like Wako Chemical for its airtight seal and dependable chemical storage.

The 38-400 thread is also a common feature of plastic bottles, including 5L “Space Savers,” Cubitainers, and 1-gallon F-style industrial jugs. Originally developed in the mid-20th century to standardize industrial packaging, it quickly became a preferred choice for its balance of security, reusability, and convenience. Whether safeguarding laboratory chemicals or keeping pantry items fresh, this simple yet innovative design continues to demonstrate the enduring impact of thoughtful engineering.