Description
Product Overview
Stop bowl water loss and sewer odors with this upgraded Teflon-faced toilet seal kit for Dometic Sealand VacuFlush toilets. Designed for models 110, 111, 210, and 510 — common in higher-end RVs, boats, and marine applications — this kit replaces both the 385311462 and 385310677 seal assemblies. The Teflon-faced polymer disk with raised alignment groove outperforms standard rubber seals, maintaining its shape through thousands of flush cycles and creating an odor-tight seal that lasts significantly longer.
Key Features
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Upgraded Teflon-Faced Disk — Unlike standard rubber seals that develop compression set (permanent flattening), the Teflon surface resists deformation through thousands of flush cycles, maintaining a consistent seal.
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Raised Alignment Groove — Precision-molded groove centers the seal on the VacuFlush ball valve for even wear distribution and consistent sealing pressure around the entire circumference.
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Complete Seal Kit — Includes Teflon-faced seal disk, mounting ring, O-rings, and silicone lubricant packet — no additional parts needed for a complete rebuild.
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Direct OEM Replacement — Exact replacement for Dometic/Sealand part numbers 385311462 and 385310677. Same dimensions, same fit, upgraded material.
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Marine & RV Compatible — Works in both recreational vehicle and marine (boat/yacht) installations with VacuFlush toilet systems.
Compatibility / Fitment
| Brand |
Series |
Models |
Replaces Part # |
| Dometic / Sealand |
VacuFlush |
110, 111, 210, 510 |
385311462, 385310677 |
Technical Specifications
| Specification |
Value |
| Part Numbers |
385311462, 385310677 |
| Seal Material |
Teflon-Faced Polymer Disk |
| Kit Contents |
Seal Disk, Mounting Ring, O-Rings, Silicone Lube |
| Compatible Flush Type |
VacuFlush (Vacuum Flush) |
| Installation Time |
30-45 Minutes |
Why Choose This
VacuFlush toilets are premium systems — and their seals demand premium materials. Standard rubber seals on these toilets often fail within 1-2 years, letting bowl water drain into the holding tank (creating sewer gas path) and allowing odors to enter the living space. The Teflon-faced design in this kit addresses both failure modes: it maintains its shape (no compression set) and creates a superior gas-tight barrier. Marine boat owners especially benefit, as salt air accelerates rubber degradation significantly.
Related Products
Frequently Asked Questions
Q: Will this fit my VacuFlush 510 Plus series?
A: Yes. The 510 series (including 510 Plus) uses this exact seal kit. The seal interface is common across all 110, 111, 210, and 510 VacuFlush toilet models from Dometic/Sealand.
Q: How is Teflon better than the standard rubber seal?
A: Teflon-faced seals resist compression set — the permanent flattening that causes rubber seals to lose their shape. This means a consistent seal over many more flush cycles. Teflon also has a lower coefficient of friction, reducing wear on the flush ball surface.
Q: Why is my toilet bowl water dropping within hours?
A: When the VacuFlush seal fails, water slowly drains from the bowl into the holding tank. This also creates an open path for sewer gases to enter the bathroom. Replace the seal to fix both issues simultaneously.
Q: How often should I replace the VacuFlush seals?
A: Under normal RV use, every 2-3 years. In marine (saltwater) environments or full-time liveaboard use, every 1-2 years. Replace sooner if you notice the bowl losing water or detect sewer odors.
Q: Does this kit include the silicone lubricant?
A: Yes. A packet of silicone lubricant is included. Apply lightly to the Teflon seal surface during installation — this helps the seal bed in and ensures smooth flush ball operation from day one.
Q: Can I install this myself or do I need a tech?
A: DIY-friendly with basic mechanical skills. Budget 30-45 minutes. Key steps: shut off water, flush to empty bowl, remove toilet from flange, replace seal components, reassemble, test with 4-5 flushes.
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