Different materials combined with casing waterproof ring:

A component used to protect the interior of a case or device from the penetration of moisture and other liquids, ensuring the reliability of the device.
It is usually located at the seams or around mounting points of the case to ensure that internal components are kept dry and secure in wet or humid environments.
Depending on the needs of the specific application, the waterproof ring can be designed in different shapes, sizes and materials to ensure optimal sealing performance.