Dealing with a leaky RV toilet? These replacement seals are here to help. They're made to fit Domestic 300, 310, and 320 model RV toilets (note: not compatible with 210, 510, or other unlisted models). The part number is 385311658, and each seal is made from quality silicone—soft, stretchy, and durable, with good sealing properties to stop leaks. Dimensions are roughly 10 cm (3.94 inches) outer diameter, 6.9 cm (2.72 inches) inner diameter, and 0.69 cm (0.27 inches) thick. You get two seals in the pack, so you have a spare or can do multiple toilets. Installation is pretty straightforward: remove the old seal, make sure the side marked 'THIS SIDE UP' faces upward, press the new one into place, and check for a snug fit. It's a simple fix that can save you from water damage and annoying drips. Just a heads-up: these are aftermarket parts, not officially endorsed by Domestic, but they're designed to work as replacements. Always double-check your toilet model before ordering!
