The leak-proof ring adopts a structural design that better matches the interface stress distribution. Through local reinforcement and a guide-type sealing profile, it reduces the possibility of leakage at weak points. In terms of materials, the flexibility and resilience are improved, allowing the ring to fit more smoothly with the base plate and form a more stable sealing surface. In high-activity, sweaty, and humid environments, we conducted enhanced evaluations of seal durability, and the results showed that the upgraded ring maintained effective barrier properties for a longer period. To ensure ease of use, the product's assembly instructions and tactile markings have been optimized, making positioning and closure more intuitive. Meanwhile, we cross-validate compatibility with different bag bodies and base plates to ensure consistent sealing performance across various combinations. Based on real user feedback, we continuously fine-tune edge details and surface treatments to reduce friction and discomfort. This upgrade focuses on the goals of "stability, ease of use, and replicability," providing a more robust solution for sealing management in complex scenarios.