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RV Toilet Seal Replacement 2-Pack for Dometic 300/310/320, Flush Ball Seal Gasket Kit Replace Part #385311658, Rubber Camper Toilet Seal Fix Leakage & Odor for RV/Travel Trailers
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Price verified Sep 30, 2026 12:25 AM · Prices & availability subject to change
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📝 Product Overview
🏪 Sold by
wsh supplier
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Perfect Fit for Dometic 300/310/320 & Direct Replacement for Part #385311658 - Custom-engineered to match OEM specifications, this RV toilet seal is a seamless replacement for Dometic 300/310/320 models (the most popular for campers/travel trailers). Exact match for Part #385311658, no modifications needed. Note: NOT compatible with Dom-etic 210/510 or unlisted models—save time with precise compatibility!
✓Premium High-Grade Rubber: our dometic 310 rv toilet seal kit Superior to OEM, Zero Leaks/Odors - Our dometic 310 ball valve seal is crafted from a high-grade, wear-resistant rubber blend that exceeds OEM quality standards, perfect for upgrading your dometic 300 toilet seal or dometic 310 toilet seal. This durable design maintains permanent flexibility and a tight seal, eliminating water leakage, sewage odors, and unstable water levels—common issues with cheap seals that fail in 3-6 months.this premium gasket ensures long-lasting performance, keeping your dometic 310 rv toilet functioning flawlessly for years.
✓All-Condition Durability: Cold Weather & Rough Terrain Ready - Dometic 310 ball valve seal Built to withstand extreme cold, bumpy off-roads, and long-term travel. Heavy-duty rubber maintains flexibility in low temperatures and tight seal on rough terrain. Reinforced design prevents leaks/odor backflow even during off-road adventures. Regular silicone lubrication (maintenance tip) extends lifespan further!
✓2-Pack Value: Spare for Emergencies, Cost-Effective Maintenance - Each rv toilet bowl gasket kit package includes 2 premium dometic 300 seal—keep 1 installed, 1 as a backup. Essential for long road trips, camping seasons, or unexpected leaks (a common hassle for RV travelers). Avoid urgent store runs or costly downtime. A budget-friendly way to extend your toilet’s lifespan without replacing the entire unit.
✓5-Min No-Tool Installation: DIY Friendly for Every RV Owner - No special skills or tools required! Complete installation in just 5 minutes with simple steps: Shut off water → Remove old seal → Clean area → Press new seal into place. Customers confirm: Even first-time users finish easily. Perfect for on-the-road repairs or quick maintenance.
⚙️ Specifications
Material
High-Grade Wear-Resistant Rubber
Outside Diameter
4 inches
Washer Type
Flat
Exterior Finish
Smooth Rubber Surface
Fastener Size
4 inches (outer diameter) x 2.75 inches (inner diameter)
Size Name
2-Pack - Dometic 300/310/320 Seal
Number of Pieces
2
Item Diameter
4 inches
Compatible Groove Diameter
2.75 inches
Material Type
High-Grade Wear-Resistant Rubber
Finish Types
smooth
