--- product_id: 16544448 title: "Genuine OEM Flush Ball Seal Kit 385311658 | for 300 and 400 Series Toilets" brand: "dometic" price: "$74.14" currency: USD in_stock: true reviews_count: 13 category: "Dometic" url: https://www.desertcart.us/products/16544448-genuine-oem-flush-ball-seal-kit-385311658-for-300-400 store_origin: US region: United States of America --- # Compact, lightweight design Durable flush seal OEM precision fit Genuine OEM Flush Ball Seal Kit 385311658 | for 300 and 400 Series Toilets **Brand:** dometic **Price:** $74.14 **Availability:** ✅ In Stock ## Summary > 🚐 Seal the deal with confidence—flush like a pro every time! ## Quick Answers - **What is this?** Genuine OEM Flush Ball Seal Kit 385311658 | for 300 and 400 Series Toilets by dometic - **How much does it cost?** $74.14 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/16544448-genuine-oem-flush-ball-seal-kit-385311658-for-300-400) ## Best For - dometic enthusiasts ## Why This Product - Trusted dometic brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Perfect OEM Fit:** Engineered specifically for Dometic 310 toilets ensuring seamless installation and leak-proof performance. - • **Long-Lasting Seal:** Premium materials provide a reliable flush seal that holds water for days, eliminating frequent replacements. - • **Trusted by Thousands:** Rated 4.7 stars by over 1,300 RV enthusiasts—join the community that refuses to settle for less. - • **Lightweight & Compact:** Slim profile and featherweight design (0.8 oz) make it easy to store and handle without hassle. - • **Effortless Installation:** Simple, user-friendly setup with clear instructions—get your RV toilet running flawlessly in minutes. ## Overview The Dometic 385311658 Flush Ball Seal Kit is a genuine OEM replacement part designed exclusively for Dometic 310 RV toilets. Lightweight and compact, it ensures a perfect fit and a durable, leak-proof seal that keeps your toilet functioning smoothly. Backed by thousands of positive reviews, this kit offers easy installation and long-lasting reliability, making it the go-to choice for RV owners who demand quality and peace of mind. ## Description The Dometic Flush Ball Seal Kit is the precise OEM replacement for 300 and 400 Series Dometic Toilets with worn or deteriorated toilet seals. Prevents water leaking from the bowl and stops odors in your RV. Manufactured from high‑quality materials, the genuine Dometic seal maintains smooth flush ball operation and tight, reliable closure for cleanliness and sanitation. Genuine Dometic OEM parts are factory direct. Dometic components ensure proper fit, safety, reliability, performance, and durability. Using non-Dometic components affect product performance and could impact warranty coverage. Review: Toilet seal - Fits perfect and very easy to install Review: Dometic 310 seal leak - Bought the cheap seals and they did not work. Ended up buying this one and it held water and worked perfectly. Dometic 310 style ## Features - Compatible with Sealand 300 & 400 series Dometic toilets - OEM Materials – Built for long‑lasting performance and chemical resistance - Restores Proper Sealing – Stops odors and bowl leakage - Smooth Operation – Allows flush ball to move freely without stickiness ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BRIFDY2 | | Batteries | 1 Unknown batteries required. | | Best Sellers Rank | #8,089 in Automotive ( See Top 100 in Automotive ) #11 in RV Toilet Spare Parts | | Brand | Dometic | | Customer Reviews | 4.7 4.7 out of 5 stars (1,354) | | Date First Available | November 7, 2011 | | Is Discontinued By Manufacturer | No | | Item Weight | 0.8 ounces | | Item model number | 385311658 | | Manufacturer | Dometic | | Manufacturer Part Number | 385311658 | | Model | 385311658 | | OEM Part Number | 385311658 | | Product Dimensions | 7 x 5 x 0.4 inches | ## Images ![Genuine OEM Flush Ball Seal Kit 385311658 | for 300 and 400 Series Toilets - Image 1](https://m.media-amazon.com/images/I/71SvkxBYvvL.jpg) ## Questions & Answers **Q: Will this fit a Sealand 2010?** A: No, this is NOT the proper seal for the 210 or 2010. The proper seal for those models is the 385316140, **Q: Will this fit a 300 series Dometic for RV?** A: I purchased one for my 300 series toilet and it fit quite well. A little bit of massaging was needed to completely install but once situated, it worked fine **Q: Is this an OEM dometic seal or 3rd party?** A: Dometic thanks you for your question. This is a dometic seal. For further information, contact our support team at customersupportcenter@dometic.com. **Q: Does this fit the Dometic 3400 electric model?** A: Dometic thanks you for your question. Unfortunately, the 385311658 flush valve is only used on the 300 series toilets. We have verified with our RV sanitation department and there is not a 3400 model currently in production. Can you please verify your model number and contact us at customersupportcenter@dometic.com for more assistance? ## Customer Reviews ### ⭐⭐⭐⭐⭐ Toilet seal *by P***R on March 31, 2026* Fits perfect and very easy to install ### ⭐⭐⭐⭐⭐ Dometic 310 seal leak *by G***S on March 25, 2026* Bought the cheap seals and they did not work. Ended up buying this one and it held water and worked perfectly. Dometic 310 style ### ⭐⭐⭐⭐⭐ Works great for a Dometic 310 *by C***S on March 14, 2025* This seal was a perfect fit for my dometic 310 toilet in my RV. Installation was easy - the only potential issue is that you can't really feel when it is seated correctly, so I wasn't sure if it was really in place. I applied pressure all around to ensure it was in correctly. Once done I tested by adding some water to it. Where it would be gone in a matter of minutes now it has been holding for a few days. I didn't want to have to do this again any time soon, so I feel the extra cost for a OE part was worth it. ## Frequently Bought Together - Dometic 385311658 Flush Ball Seal Kit 310 Toilets - Dometic 385311641 Genuine OEM Water Valve Kit | 300 301 310 320 Dometic and Sealand Toilets | Includes Hose Clamp and Fasteners | White Compact Kit for Efficient Repair and Replacement - Dometic 385311652 Mounting Hardware Kit, White --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/16544448-genuine-oem-flush-ball-seal-kit-385311658-for-300-400](https://www.desertcart.us/products/16544448-genuine-oem-flush-ball-seal-kit-385311658-for-300-400) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-17*