The Role of Silicone Valve Seal in Reliable Flow, Venting, or Light Control

https://flowcontroldesk.wpsuo.com/how-silicone-lenses-help-simplify-sealing-in-optical-assemblies

A reliable product depends on parts that do their job every time. A silicone valve seal can support clean use when its shape and material match the task. It is not enough to choose a part by name only