Design Details That Make NBR Valves Easier to Use and Validate

https://siliconeopticsreview.image-perth.org/how-a-one-piece-valve-can-reduce-assembly-steps-in-product-development

Designing a small part can affect the whole product. A NBR valves 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