Features: 1. Well Sealed: Our RV toilet seal kit provides a tight and reliable sealing performance, helping to prevent leaks and odors from your RV toilet. 2. Reliable Construction: The RV toilet flush seal kit is made of high-quality materials and craftsmanship, designed to withstand the daily demands of RV use, offering long-lasting performance and durability. 3. Applicable Model: This premium RV toilet bottom base seal is a perfect replacement for Dometic 300, 310, and 320 RV toilet models, ensuring a worry-free camping experience. 4. OE Number: The part number for reference is 385311652. Please verify compatibility with your unit to ensure correct fitment. 5. Easy Installation: Installing the RV toilet flange seal and mounting hardware is quick and straightforward. Simply turn off the water supply, remove the old bottom seal ring, and install the new kit—no professional assistance required. Specification: Item Type: RV Toilet Seal Kit Installation Type: Direct Replacement Material: Rubber, Nylon, Stainless Steel, Copper OE Number: 385311652 Fitment: Compatible with Dometic 300, 310, and 320 RV toilet models Note: Please double-check the part number and fitment of your current unit. Reference information is provided for guidance only.