{"product_id":"grundig-3-in-1-rv-toilet-seal-flange-kit-for-dometic-300-310-320-replaces-385345892-385311658-385311652","title":"Grundig 3-in-1 RV Toilet Seal \u0026 Flange Kit for Dometic 300 310 320 | Replaces 385345892, 385311658, 385311652","description":"\u003c!-- Generated by Trae Work --\u003e\n\u003cdiv\u003e\n\n  \u003ch2\u003eI. Product Overview\u003c\/h2\u003e\n  \u003cp\u003eIf water is pooling around the base of your Dometic 300, 310, or 320 toilet — or odors are creeping into the bathroom — this 3-in-1 seal kit fixes the leak at its source. It replaces the three parts that wear out over time: the 3\" socket floor flange, the flush ball seal, and the base seal.\u003c\/p\u003e\n  \u003cp\u003ePull the toilet, swap the parts, and be back on the road in about 30 minutes — no mobile tech, no dealer service call.\u003c\/p\u003e\n\n  \u003ch2\u003eII. Product Features\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect OEM Replacement:\u003c\/strong\u003e The flange and both seals swap in like-for-like — same fit, same function, no modifications needed.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStops Leaks and Black Tank Odors:\u003c\/strong\u003e New flange and seals keep wastewater under the toilet and black tank odors out of your living space.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilt for Life on the Road:\u003c\/strong\u003e Withstands repeated flushing, miles of highway vibration, and temperature swings for long-term, leak-free service.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEverything in One Box:\u003c\/strong\u003e All three wear parts plus all mounting hardware included — open the box and start the repair.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eIII. Product Specifications\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e RV Toilet Seal and 3\" Socket Flange Repair Kit (3-in-1)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReplaces Part #:\u003c\/strong\u003e 385345892 (3\" Socket Floor Flange), 385311658 (Flush Ball Seal), 385311652 (Base Seal)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Dometic 300 \/ 310 \/ 320 Series RV Toilets\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEstimated Install Time:\u003c\/strong\u003e About 30 minutes with basic hand tools\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 18 x 18 x 10 cm (7.1 x 7.1 x 3.9 in)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eItem Weight:\u003c\/strong\u003e 435 g (15.3 oz)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong style=\"color: #c00;\"\u003eIMPORTANT:\u003c\/strong\u003e NOT compatible with residential plumbing, standard home toilets, or any Dometic toilet series other than 300 \/ 310 \/ 320. Please verify your toilet model before purchase.\u003c\/p\u003e\n\n  \u003ch2\u003eIV. Package Includes\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x RV Toilet 3\" Socket Floor Flange (385345892)\u003c\/li\u003e\n    \u003cli\u003e1 x Flush Ball Seal (385311658)\u003c\/li\u003e\n    \u003cli\u003e1 x RV Toilet Base Seal (385311652)\u003c\/li\u003e\n    \u003cli\u003e2 x Gland Gasket\u003c\/li\u003e\n    \u003cli\u003e1 x Seal Ring\u003c\/li\u003e\n    \u003cli\u003e2 x Nut\u003c\/li\u003e\n    \u003cli\u003e2 x Bolt\u003c\/li\u003e\n    \u003cli\u003e4 x Self-Tapping Screw\u003c\/li\u003e\n    \u003cli\u003e4 x Expansion Anchor\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eV. Precautions\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCheck Base Dimensions Before Ordering:\u003c\/strong\u003e The replacement flange may look slightly smaller than your original OEM part while still seating correctly. Measure your toilet's base dimensions to confirm a snug fit.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn Off the Water Supply:\u003c\/strong\u003e Shut off the water supply to the toilet and flush to release any remaining pressure in the lines before removing the old flange and seals.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThe Toilet Must Be Removed:\u003c\/strong\u003e Replacing the flange and base seal requires lifting the toilet off the floor. Disconnect the water line first, then unbolt and lift the toilet straight up.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstall All New Seals:\u003c\/strong\u003e Replace the flange, flush ball seal, and base seal together. Reusing an old seal is a common cause of recurring leaks.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClean the Mounting Surface:\u003c\/strong\u003e A reliable seal depends on a debris-free surface, so wipe away old sealant, dust, and residue before installing the new parts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUse Proper Tools:\u003c\/strong\u003e Basic hand tools are required but not included. Do not over-tighten the screws, as this can crack the flange or damage the mounting points.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCheck for Leaks After Installation:\u003c\/strong\u003e Turn the water supply back on, flush several times, and inspect the toilet base and all connections for leaks.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCold Weather Notice:\u003c\/strong\u003e If you store your RV in freezing temperatures, drain the water system completely to prevent freeze damage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n","brand":"Grundig-auto","offers":[{"title":"Default Title","offer_id":46740127023183,"sku":"Toilet Seal Kit-01","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9143\/8927\/files\/1789020700308.png?v=1789020715","url":"https:\/\/grundig-auto.com\/sv-de\/products\/grundig-3-in-1-rv-toilet-seal-flange-kit-for-dometic-300-310-320-replaces-385345892-385311658-385311652","provider":"Grundig-auto","version":"1.0","type":"link"}