Design Details That Make No Drip Valve Easier to Use and Validate

https://flowsealcomponents.almoheet-travel.com/nbr-valves-buying-guide-for-oem-and-contract-manufacturing-teams

Designing a small part can affect the whole product. A no drip valve may look simple, but it has a real job to do. It must work with the cap, case, fluid, air path, or light path around it