Dometic/Sealand | 2 Part Bowl Seals with Drain Holes | 385316140

Ensure leak-free performance and restore vacuum integrity with the Dometic/Sealand 385316140 2‑Part Bowl Seal Kit with Drain Holes—a premium OEM replacement designed for older VacuFlush, Traveler, and SeaLand marine/RV toilets (manufactured in 2000 and earlier). This kit includes both the rubber bowl seal and the Teflon (ball) seal, engineered precisely to maintain a tight, durable seal between your toilet’s bowl and base.

Optimized Performance & Leak Prevention
Equipped with overflow (drain) holes, this kit ensures proper drainage in toilets with built-in overflow functionality. These drain holes help manage excess water and safeguard against vacuum loss, delivering consistent flushing performance.

Ideal For Older Models (2000 & Earlier)
Specifically compatible with 2000‑and‑earlier models of Dometic/Sealand toilets — this kit is a trusted choice when replacing seals in aging systems.

Features & Benefits

• OEM two-piece bowl seal kit for Dometic/Sealand EcoVac toilets
• Includes both upper and lower bowl seals
• Integrated drain holes provide proper water flow for EcoVac systems
• Ensures consistent bowl water retention
• Prevents odors by restoring an airtight, watertight seal
• Helps maintain smooth flush ball operation
• Manufactured from long-life, chemical-resistant materials
• Easy replacement without special tools

Fits These Models

Compatible with:

• Dometic/Sealand EcoVac 157
• EcoVac 158
• EcoVac 159

Not compatible with VacuFlush or Traveler series unless specified separately.

Common Issues Solved

Replacing the 385316140 seal kit resolves:

• Bowl not holding water
• Persistent odors entering the RV or boat
• Leaking around the flush ball area
• Slow or incomplete seal closure
• Worn, dried, cracked, or swollen seals
• Mineral buildup affecting seal performance

Replaces / Also Known As

• Dometic 385316140
• Sealand 385316140 Two-Part Seal Kit
• EcoVac Bowl Seal Replacement
• Upper & Lower Bowl Seal Set with Drain Holes
• RV/Marine Toilet Seal Kit

What’s Included

• Upper bowl seal
• Lower bowl seal (with engineered drain holes)
• Installation instructions

Installation Overview

1. Turn off water supply and flush to empty the bowl.
2. Remove toilet from the floor to access the base assembly.
3. Remove the flush ball assembly and old seal components.
4. Clean the sealing surfaces thoroughly.
5. Install the new upper and lower seals in correct orientation.
6. Reassemble toilet, reinstall, and reconnect water.
7. Test for proper water retention and flush operation.

Typical installation time: 20–40 minutes, depending on access.

Frequently Asked Questions

Q: Why does this seal have drain holes?
EcoVac systems require engineered drain flow; the holes allow proper vacuum operation and water management.

Q: My bowl slowly drains water—will this kit fix it?
Yes. A failing bowl seal is the most common cause.

Q: Is this compatible with VacuFlush toilets?
No. This kit is specifically for EcoVac 157, 158, and 159.

Q: Is this a genuine OEM part?
Yes — this is the official Dometic/Sealand factory-approved replacement kit.

Q: Do I need to remove the toilet to install this?
Most EcoVac systems require removing the toilet for proper seal replacement.