{"product_id":"dometic-flush-ball-seal-kit-for-300-400-series-sealand-rv-toilets-oem-replacement-chemical-resistant-elastomer","title":"Dometic Flush Ball Seal Kit for 300\/400 Series \u0026 Sealand RV Toilets — OEM replacement, chemical-resistant elastomer","description":"\u003cp\u003e\u003cstrong\u003eThe Dometic Flush Ball Seal Kit is the factory replacement seal for Dometic and Sealand 300\/400 series toilets, restoring a watertight bowl closure and odor control.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your RV toilet shows signs of leakage, a sticky flush ball, or faint odors, worn seals are often the cause. This genuine Dometic OEM kit replaces the original flush ball seal with materials chosen for chemical resistance and long life, ensuring the flush mechanism closes cleanly and reduces the chance of bowl water seeping into the toilet base or the holding tank area.\u003c\/p\u003e\n\n\u003ch3\u003eHow will replacing the flush ball seal stop leaks and smells?\u003c\/h3\u003e\n\n\u003cp\u003eOver time, exposure to cleaning chemicals and waste can harden or deform the elastomer seal, compromising its ability to form a full, leak-proof closure. Installing a new Dometic seal restores the intended contact between the flush ball and the seat, preventing water from escaping and helping to contain odors within the bowl and holding tank.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM elastomer matches original dimensions for proper sealing.\u003c\/li\u003e\n  \u003cli\u003eChemical-resistant material resists degradation from cleaners and waste.\u003c\/li\u003e\n  \u003cli\u003ePrecision fit prevents gaps that cause slow leaks and smell migration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my 300 or 400 series Dometic or Sealand toilet?\u003c\/h3\u003e\n\n\u003cp\u003eYes—this is the genuine Dometic OEM replacement designed specifically for the 300 and 400 series models and compatible Sealand toilets. Because it’s made to factory specifications, it replaces the original part without modification, maintaining safe and reliable operation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDirect OEM compatibility with Dometic 300 and 400 series toilets.\u003c\/li\u003e\n  \u003cli\u003eWorks with matching Sealand models that use the same flush assembly.\u003c\/li\u003e\n  \u003cli\u003eNo trimming or adapters required for correct installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what tools are needed?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic RV maintenance: remove the old seal, clean the seating area, and fit the new OEM seal in place. The kit is designed for a direct swap so you can avoid complex modifications or specialized equipment.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTypical tools: screwdriver set and a soft rag or mild cleaner.\u003c\/li\u003e\n  \u003cli\u003eNo adhesives or special bonding agents required.\u003c\/li\u003e\n  \u003cli\u003eReplacement typically takes less than an hour for most DIYers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat advantages does the genuine Dometic part offer over aftermarket options?\u003c\/h3\u003e\n\n\u003cp\u003eGenuine Dometic parts are manufactured to the same tolerances and materials as the original component, which helps preserve the toilet’s intended performance and long-term durability. Using OEM parts also reduces the risk of improper fit or premature failure that can arise with generic substitutes.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFactory-direct materials and dimensions for reliable sealing.\u003c\/li\u003e\n  \u003cli\u003eHelps retain manufacturer recommendations and service standards.\u003c\/li\u003e\n  \u003cli\u003eReduces risk of warranty issues linked to incompatible parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: RV owners, campground hosts, and mobile-service technicians who maintain Dometic or Sealand 300 and 400 series toilets and want a dependable, factory-quality replacement part. If you’re experiencing bowl leaks, lingering odors, or a flush ball that sticks, this OEM seal kit provides a precise, durable repair that keeps your restroom sanitary and functioning as intended. Choosing the genuine Dometic kit helps ensure correct fit, chemical resistance, and consistent performance over time.\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: Is this seal compatible with all Dometic 300 and 400 series toilets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This genuine Dometic kit fits Dometic and compatible Sealand 300 and 400 series toilets manufactured to the original specification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install the flush ball seal myself without special tools?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Basic hand tools and cleaning supplies are usually sufficient; installation is a direct replacement and typically takes under an hour.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Dometic","offers":[{"title":"Default Title","offer_id":48083137626270,"sku":"B00BRIFDY2","price":55.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dometic-front-seal-kit-package.jpg?v=1785826106","url":"https:\/\/northtrailauto.ca\/products\/dometic-flush-ball-seal-kit-for-300-400-series-sealand-rv-toilets-oem-replacement-chemical-resistant-elastomer","provider":"North Trail Auto","version":"1.0","type":"link"}