Compatibility - 385311652 rv toilet seal and 385311658 rv toilet flush ball seal are designed to replace Dometic 300, 310 and 320 series toilets. - They do not fit models 210, 510 or other models not listed. Please confirm that the rv toilet replacement seal is suitable for your toilet before purchase. What it does - Replaces a ruptured original toilet seal to address odor and water leakage. - Helps keep the air inside the RV clean, saving time and improving daily life. Materials and fit - Made of special rubber for long life. - Factory uses original tooling to mold the gaskets, ensuring a precise fit. - The kit helps restore a proper seal and keeps water in place. What is included and installation notes - Includes 385311652 rv toilet seal and 385311658 rv toilet flush ball seal. - Installation hardware provided includes brass bolts, nuts and bolt caps. - Note that the marked side should face up during installation. Easy to install - Turn off the water supply. - Remove the old seal (no disassembly of the toilet is required) and place the flush ball seal in position, ensuring it is seated fully. - Secure the toilet using the provided brass bolts, nuts and bolt caps. - Check for leaks and complete installation. Use scenarios - After replacing a Dometic 300/310/320 toilet seal to eliminate odor and water leakage. - In an RV experiencing odor issues or leaks around the toilet due to seal rupture. - When you want a quick, tool-free upgrade to restore seal integrity and maintain a clean living environment while camping or traveling.