RV Toilet Valves, Seals and Repair Parts

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56 products

White Dometic 385311641 RV Toilet Water Valve - Side Angle | United RV Parts
Save $51.00 Ships Next Day-order by 1:00CT(M-F)
Black Rubber Dometic Toilet Floor Seal - Top View | United RV Parts
Save $6.00
Black Dometic 385311462 Toilet Seal Kit - Two Piece View | United RV Parts
Save $14.35
Dometic Sealand Ball and Shaft Kit 385310681 Complete Parts Set - Flat Lay | United RV Parts
Save $21.00
Thetford 31705 RV Toilet Valve for Aqua-Magic V with Black Rubber Seal - Complete Assembly | United RV Parts
Save $20.00 Ships Next Day-order by 1:00CT(M-F)
Thetford 42049 RV Toilet Valve Kit Style II Components - Parts Layout | United RV Parts
Save $20.00
White Plastic Thetford Toilet Valve 31113 with Hardware - Side View | United RV Parts
Save $17.00
Thetford Aqua-Magic IV Water Valve Assembly 13168 - Top View | United RV Parts
Save $27.00
Grey Thetford 92415 Porta Potti Floor Plate - Back View | United RV Parts
Save $5.00
Black Rubber Thetford Aqua Magic V Blade Seal Set - Top View | United RV Parts
Save $6.00
Black Rubber Thetford Bravura Toilet Seal Kit - Complete Set | United RV Parts
Save $16.00
Black Rubber Thetford 42141 Waste Ball Seal Kit - Flat Lay View | United RV Parts
Save $9.00 Ships Next Day-order by 1:00CT(M-F)
White Clean Camper RV Toilet Bidet - Product Box View | United RV Parts
Save $50.00 Free Shipping

Most RV toilet problems come down to a small number of worn parts rather than a failed toilet. A slow leak at the base usually means the floor seal needs replacing. A toilet that won't hold water in the bowl is typically a worn waste ball seal or ball and shaft assembly. When the flush pedal feels spongy or stops returning properly, the water valve is usually the cause.

The parts selection here covers the most common repairs for Dometic, Thetford, Seaflo, and Lippert toilets, including water valves, vacuum breakers, ball seal kits, floor seals, flush pedals, and seats. Check your toilet model number before ordering to confirm the right fit.

Choosing the Perfect RV Toilet: Your Comprehensive Guide

The call of the open road, the freedom to explore, and the thrill of adventure—nothing quite captures the essence of travel like hitting the road in an RV. Amidst all the excitement, choosing the right RV toilet might not seem like the most thrilling decision, but trust me, it's a crucial one.

What RV toilet parts can I find in this collection?

This collection covers the common failure points on RV toilets: flush ball seals, water valves, vacuum breakers, foot pedal assemblies, closet flange seals, hand spray kits, and bowl-to-base gaskets. Most parts fit Dometic, Thetford, and Sealand units. Confirm your toilet model number before ordering to make sure you get the correct fit.

How do I know which RV toilet flush valve I need?

Match the valve to your toilet brand and model, not just the appearance. Dometic 300, 310, and 320 series use a ball-style flush mechanism with a specific seal kit, while Thetford Aqua-Magic V, IV, and Style II each take different water valve assemblies. Check the data label under the toilet base or behind the foot pedal for the model number, then cross-reference it against the part listing. If your toilet leaks at the base when flushed, you likely need a flush ball seal; if water trickles into the bowl constantly, the water valve is the usual culprit.

Can I repair my RV toilet myself, or do I need a technician?

Most RV toilet repairs are straightforward DIY jobs that take 20 to 45 minutes with basic hand tools. Replacing a flush ball seal, water valve, or vacuum breaker requires shutting off the water, disconnecting the supply line, and swapping the part. The OEM service manuals walk through each repair step by step. For odor or holding tank issues that often get blamed on the toilet, our Thetford holding tank chemicals address the root cause rather than the symptom.

How often should RV toilet seals be replaced?

Plan on replacing the flush ball seal every 2 to 3 years under regular use, sooner if the toilet sits unused for long stretches and the seal dries out. A failing seal shows up as water leaking from the ball into the holding tank between flushes, or as sewer odor working its way up through the bowl. Keeping the seal lubricated with a silicone-safe conditioner extends its life. For complete bathroom maintenance, pair seal replacement with proper roof venting from our Ventline vent accessories to keep airflow moving through the holding tank.

Do you carry parts for both plastic and porcelain RV toilets?

Yes. The collection includes repair parts for lightweight plastic toilets (Dometic 300 series, Thetford Aqua-Magic) and full porcelain models (Dometic 310/320, Sealand Traveler). Internal components like water valves and vacuum breakers are often shared across both body styles within the same brand family, but flush mechanisms and base seals are model-specific. Verify the part number on the toilet itself before ordering.

What ships free, and how fast do orders arrive?

Orders over $100 ship free within the contiguous United States. Most RV toilet repair parts are small, in-stock items that leave the warehouse within 1 business day and arrive in 3 to 5 business days via standard ground. If you need help confirming the right part for your toilet, text or call our team at 817-984-1852 before ordering.