--- product_id: 812749 title: "Thetford 33239 Closet Flange Seal , Gray" brand: "thetford" price: "$22.37" currency: USD in_stock: true reviews_count: 13 category: "Thetford" url: https://www.desertcart.us/products/812749-thetford-33239-closet-flange-seal-gray store_origin: US region: United States of America --- # Universal Fit for Thetford Toilets Designed for RV & Camper Toilets Easy DIY Replacement Thetford 33239 Closet Flange Seal , Gray **Brand:** thetford **Price:** $22.37 **Availability:** ✅ In Stock ## Summary > 🚐 Seal the deal, ditch the stink—camp fresh with Thetford! ## Quick Answers - **What is this?** Thetford 33239 Closet Flange Seal , Gray by thetford - **How much does it cost?** $22.37 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/812749-thetford-33239-closet-flange-seal-gray) ## Best For - thetford enthusiasts ## Why This Product - Trusted thetford brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Odor-Proof Seal:** Stops sewer gases dead in their tracks, keeping your camper fresh and inviting. - • **Durable Materials:** Crafted from resilient plastic and rubber to withstand the rigors of mobile living. - • **Trusted Brand Legacy:** Backed by Thetford’s 40+ years of camping innovation and a 1-year limited warranty for peace of mind. - • **Effortless Installation:** No plumbing pro needed—snap, unscrew, replace, and seal in minutes with simple hand tools. - • **Universal Compatibility:** Fits multiple Thetford models including Electra Magic, Aqua-Magic, Starlite, and Galaxy—one seal to rule them all. ## Overview The Thetford 33239 Closet Flange Seal is a universal-fit replacement part designed specifically for Thetford RV toilets. Made from durable plastic and rubber, it ensures a tight, odor-blocking seal that prevents sewer gases from escaping your camper. Easy to install with basic tools, this flange seal supports hassle-free maintenance and is backed by Thetford’s trusted 40-year legacy and a 1-year limited warranty. ## Description Thetford is a name you can trust and a company you can count on, a world market leader in carefree camping for more than 40 years. Review: Fits old Thetford toilet easy replace. - My toilet was smelling bad and figured it was the flange seal. My old one was worn out and distorted allowing gases front black tank to seep into the camper. These are super easy to replace so don’t feel intimidated not a dirty job. 1. Turn off the water and pump to your rig 2. Turn on few faucets to relieve the pressure in the lines 3. Hold the foot pedal down for a few seconds to dump all the water 4. Remove front cover around foot pedal “it just snaps on” 5. Unscrew water line on back of toilet mine just threads on by hand no tools needed. (Recommend getting a towel around water line, little excess water in the line will probably drip out. It’s clean water don’t worry comes from same place your sink does) 6. On each side of the toilet these is a nut you need to remove I think was 9/16 I just used adjustable wrench. 7. After removing nuts and disconnecting water line your toilet can be lifted off. I laid down a trash bag on the floor to set it on. 8. Replace gasket, old one will be either stuck to floor flange or on bottom of the toilet. Place the new one on the bottom of the toilet with the tapered part facing down towards the floor. 9. Set toilet back in place will be little tricky to line up the holes for the bolts. Ensure the toilet is centered on the hole and sits flush and straight. 10. Tighten down the two nuts. Don’t over tighten them, the flange and the toilet is plastic and will crack. Just snug is good. 11. Reconnect water line and turn water back on and your done. No more sewer smell. Review: Perfect - It was exactly what I ordered and expected. Shipment arrived on a timely manner. I would recommend this seller. ## Features - Closet flange for Thetford toilets.Fit Type: Universal Fit - Replaces 02125 - Current part number 33239 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000BGM7QS | | Best Sellers Rank | #27,024 in Automotive ( See Top 100 in Automotive ) #31 in RV Toilet Spare Parts | | Brand | Thetford | | Brand Name | Thetford | | Color | Gray | | Customer Reviews | 4.6 out of 5 stars 3,364 Reviews | | Global Trade Identification Number | 00028985332398 | | Included Components | 1 - Closet Flange Seal | | Item Type Name | Replacement Closet Flange Seal for Electra Magic Model 80, Aqua-Magic, Starlite, and Galaxy RV toilets Thetford-33239 | | Manufacturer | Thetford | | Manufacturer Part Number | 33239 | | Manufacturer Warranty Description | 1 year limited warranty: part coverage for repair or replacement of defective parts. | | Material | Plastic, Rubber | | Material Type | Plastic, Rubber | | Model Number | 33239 | | Number of Items | 1 | | Number of Packs | 1 | | UPC | 028985332398 | | Unit Count | 1 Count | ## Product Details - **Brand:** Thetford - **Color:** Gray - **Material:** Plastic, Rubber - **Number of Items:** 1 - **UPC:** 028985332398 ## Images ![Thetford 33239 Closet Flange Seal , Gray - Image 1](https://m.media-amazon.com/images/I/41c0t2T8zqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits old Thetford toilet easy replace. *by C***S on April 25, 2025* My toilet was smelling bad and figured it was the flange seal. My old one was worn out and distorted allowing gases front black tank to seep into the camper. These are super easy to replace so don’t feel intimidated not a dirty job. 1. Turn off the water and pump to your rig 2. Turn on few faucets to relieve the pressure in the lines 3. Hold the foot pedal down for a few seconds to dump all the water 4. Remove front cover around foot pedal “it just snaps on” 5. Unscrew water line on back of toilet mine just threads on by hand no tools needed. (Recommend getting a towel around water line, little excess water in the line will probably drip out. It’s clean water don’t worry comes from same place your sink does) 6. On each side of the toilet these is a nut you need to remove I think was 9/16 I just used adjustable wrench. 7. After removing nuts and disconnecting water line your toilet can be lifted off. I laid down a trash bag on the floor to set it on. 8. Replace gasket, old one will be either stuck to floor flange or on bottom of the toilet. Place the new one on the bottom of the toilet with the tapered part facing down towards the floor. 9. Set toilet back in place will be little tricky to line up the holes for the bolts. Ensure the toilet is centered on the hole and sits flush and straight. 10. Tighten down the two nuts. Don’t over tighten them, the flange and the toilet is plastic and will crack. Just snug is good. 11. Reconnect water line and turn water back on and your done. No more sewer smell. ### ⭐⭐⭐⭐⭐ Perfect *by J***N on June 18, 2026* It was exactly what I ordered and expected. Shipment arrived on a timely manner. I would recommend this seller. ### ⭐⭐⭐⭐⭐ Keep a Spare *by A***5 on December 29, 2024* Thetford Closet Flange Seal works great with the Thetford Aqua Magic II in my camper . Keep a spare on hand just incase --- ## 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/812749-thetford-33239-closet-flange-seal-gray](https://www.desertcart.us/products/812749-thetford-33239-closet-flange-seal-gray) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-13*