LFCYORQ RV Toilet Seal Kit for Dometic 300/310/320, 2-Pack
$9.85 on Amazon.com (as of October 13, 2026, 3:48 AM EST) View details ↗
Restore the integrity of your RV sanitation system with the LFCYORQ Flush Ball Seal Gasket Kit. Designed specifically as a high-quality replacement for Dometic 300, 310, and 320 series toilets, this kit effectively addresses common maintenance issues such as persistent leaks and unpleasant odors caused by worn or degraded rubber gaskets. By utilizing original factory mold specifications, these seals ensure a precise fit that restores the airtight and watertight seal necessary for a comfortable and hygienic travel experience.
Installation is engineered for convenience, allowing you to perform necessary maintenance without the need for complex tools or the labor-intensive process of disassembling your entire toilet. Each seal features intuitive “This Side Up” orientation markings to eliminate guesswork during the replacement process. Simply remove your existing, compromised gasket and press the new, durable rubber seal into place in a matter of minutes. This value-packed set includes two individual seals, providing you with an immediate solution today and a reliable spare for future maintenance needs.
| Compatibility | Dometic 300/310/320 series toilets |
|---|---|
| Outer Diameter | 4″ |
| Inner Diameter | 2.7″ |
| Quantity | 2-pack |
| Material | Durable rubber |
| Replacement Part Number | 385311658 |






