{"product_id":"tomoon-rv-toilet-seal-replacement-2-pack-for-dometic-300-310-320-oem-fit-rubber-ball-valve-gasket-leak-odor-fix","title":"TOMOON RV Toilet Seal Replacement 2-Pack for Dometic 300\/310\/320 — OEM-fit Rubber Ball Valve Gasket, Leak \u0026 Odour Fix","description":"\u003cp\u003e\u003cstrong\u003eTOMOON 2-pack RV toilet seal is a direct, high-durability replacement for Dometic 300\/310\/320 toilets (Part #385311658) designed to stop leaks and reduce odors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Dometic 300, 310 or 320 toilet shows leaks, poor valve closure, or unpleasant smells, swapping the worn ball valve gasket is a fast, cost-effective fix. These TOMOON seals are molded to match OEM dimensions so you can replace the failed part without modifications. The kit includes two identical seals so you can install one and keep the other as a spare for road repairs or next-season maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly can I replace the old seal?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward and requires no specialty tools. Most users finish the swap in about five minutes by following simple steps: shut off water, remove the old gasket, clean the contact area, and press the new seal into place. The design seats easily to create an immediate tight closure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTypical install time: ~5 minutes\u003c\/li\u003e\n  \u003cli\u003eNo tools required for standard replacement\u003c\/li\u003e\n  \u003cli\u003eIncludes two seals—one installed, one spare\u003c\/li\u003e\n  \u003cli\u003eInstructions align with OEM part fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these seals stop leaks and odor without modifications?\u003c\/h3\u003e\n\u003cp\u003eYes — TOMOON seals are custom-sized for Dometic 300\/310\/320 toilets and match Part #385311658, eliminating the need to alter the toilet. The high-grade rubber formulation maintains a snug fit to help prevent water seepage and reduce odor migration that comes from degraded gaskets. Proper seating and occasional lubrication help sustain the tight seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecise match to OEM dimensions (Part #385311658)\u003c\/li\u003e\n  \u003cli\u003eHigh-grade rubber resists deformation and wear\u003c\/li\u003e\n  \u003cli\u003eHelps prevent water leakage and scent escape\u003c\/li\u003e\n  \u003cli\u003eWorks immediately after installation when seated correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the material perform in different climates and terrains?\u003c\/h3\u003e\n\u003cp\u003eThe seals are formulated for flexibility and resilience, so they stay pliable in cold weather and resist cracking from vibration or movement. That makes them suitable for seasonal camping, off-road travel, and long-haul trips where repeated flexing can stress lesser materials. Regular maintenance, such as applying a thin silicone lubricant, will extend the part’s service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaintains flexibility at low temperatures\u003c\/li\u003e\n  \u003cli\u003eResists abrasion and compression set from bumpy roads\u003c\/li\u003e\n  \u003cli\u003eRecommended occasional silicone lubrication for longevity\u003c\/li\u003e\n  \u003cli\u003eDesigned for long-term seasonal use and travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy buy a 2-pack instead of a single seal?\u003c\/h3\u003e\n\u003cp\u003eKeeping a spare seal onboard prevents downtime and emergency trips to the store when a gasket fails on the road. The 2-pack offers value and convenience: install one now and stow the second as an immediate replacement if the installed part wears out. This approach reduces the risk of being stranded with a non-sealing toilet while traveling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne ready-to-install, one kept as backup\u003c\/li\u003e\n  \u003cli\u003eCost-efficient compared with single replacement purchases\u003c\/li\u003e\n  \u003cli\u003ePrevents unexpected service interruptions during trips\u003c\/li\u003e\n  \u003cli\u003eCompact storage—easy to carry onboard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: RV owners and repair-minded campers who use Dometic 300, 310 or 320 toilets and want a reliable, OEM-matching replacement for Part #385311658. It’s ideal for travelers who prefer to perform quick DIY maintenance, fleet managers who maintain multiple units, and anyone preparing their rig for seasonal use or off-grid trips. Not compatible with Dometic 210\/510 models or unlisted toilets—confirm your model before ordering.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these seals compatible with Dometic Part #385311658?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. TOMOON seals are made to match Part #385311658 and fit Dometic 300\/310\/320 models without modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need tools or glue to install the replacement seal?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools or adhesives are required; installation is a simple press-fit and takes about five minutes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TOMOON","offers":[{"title":"Default Title","offer_id":55163273412951,"sku":"B0FSJMPRCC","price":33.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/tomoon-front-packaging-rv-toilet-seal.jpg?v=1790342893","url":"https:\/\/britishgarage.co.uk\/products\/tomoon-rv-toilet-seal-replacement-2-pack-for-dometic-300-310-320-oem-fit-rubber-ball-valve-gasket-leak-odor-fix","provider":"British Garage","version":"1.0","type":"link"}