Detailed Answer
Yes. Sealing rings are consumables: replace when deformed, cracked, or losing elasticity (usually 2-3 years). Replacement notes: 1. Use original sealing rings (size-matched); 2. Install properly (no twisting); 3. Apply a little silicone grease (assists sealing); 4. Tighten the battery cover/charging port cover. Lider LD series sealing rings can be purchased separately; same for Xingjia. A failed sealing ring means a failed protection rating.
| Interval | 2-3 years |
| Replacement | Original + proper install |
| Lider | Sold separately |
Note:A deformed sealing ring lets water in — inspect regularly.