【Compatibility】: RV Toilet Seal Kit is designed for Dometic 300, 310, 320 Series RV Toilets and a perfect replacement for parts 385311658 and 385311652. NOTE: Does not fit models: 210, 510 or other models not mentioned. 【Fix Problems】: This RV toilet gasket and flush ball seal kit can effectively deal with the problem of odor and water leakage caused by the rupture of the original toilet seal. Keep the air in the RV clean and making your trip worry-free. 【High Quality】: Our RV Toilet Seal Gasket Kit is made of excellent quality composite material for durability, reliable sealing, and a long service life. Designed to fit perfectly, prevents water leakage and eliminates odors, ensuring a fresh RV interior and you can travel without worry. 【Easy Installation】: It is easy to replace, first turn off the water supply, just take out the old seal and clean the rim and bowl area where the old seal was, then replace it with the new toilet seal. Check for leaks, Finally, secure the toilet using the provided brass bolts, nuts and bolt caps. 【Quality Service】: We offer a one year warranty. If you have concerns with the RV Toilet Seal Kit, please feel free to contact us, we are committed to solving problems and providing high quality services for all customers. RV Toilet Seal Kit Compatible with Dometic 300 310 320 Series RV Toilets, 385311658 Flush Ball Seal and 385311652 Base Seal Gasket Replacement Parts with Mounting Hardware Kit, 2 in 1 Camper Set