KPALAG RV & Marine Toilet Bowl Seal Kit for Dometic/Sealand 210/110 Natural Rubber, Non‑Stick Coating

KPALAG rubber bowl seal kit is a natural-rubber replacement gasket designed to restore reliable sealing and prevent leaks in compatible Dometic/Sealand RV and marine toilets. The KPALAG seal kit replaces worn or stiff bowl seals on many pedal-operated VacuFlush and gravity-discharge toilets produced after 2001. Built from high-quality natural rubber with a corrosion- and wear-resistant surface treatment, this gasket is intended to resist hardening, sticking, and premature failure that cause vacuum loss or leaking. It fits numerous model series and part numbers—making it a direct swap for common maintenance jobs aboard boats and RVs.

Which toilets will this seal kit fit?

This KPALAG gasket is formulated to match the dimensions and function of seals used in many Dometic/Sealand gravity and VacuFlush toilets. It fits a long list of model series and replaces multiple OEM part numbers used across RV and marine applications.

• Compatible with gravity-discharge models like 110, 111, 210, 510H/510PS series
• Works with pedal VacuFlush series including 146–149, 506+, 508+, 547–549 and larger series
• Direct replacement for part numbers 385311462, 385310677, 11462, 311462
• Not designed for bowls that include an internal overflow hole

How does the material and coating improve performance?

The seal uses natural rubber chosen for flexibility and resistance to hardening over time. An anti-corrosion, wear-resistant coating on the contact surface reduces sticking and abrasion so the gasket maintains shape and sealing force through repeated cycles.

• Natural rubber resists cracking and preserves elasticity
• Surface coating minimizes adhesion and wear from repeated flushing
• Durability improvements help extend service life under marine and RV conditions

When should I replace my toilet bowl seal?

Inspect the seal annually and replace it immediately if you notice leaking, loss of vacuum, or visible hardening. KPALAG recommends changing the bowl seal every three years as a preventive maintenance step, or sooner if performance declines.

• Replace when water leaks from the bowl or vacuum is lost
• Change every three years for preventative upkeep in high-use systems
• Check for stiffness, cracks, or deformation during routine service

Is installation difficult and what should I check after replacing it?

Installation is straightforward for anyone familiar with basic toilet servicing: remove the old seal, clean the mating surfaces, and seat the new gasket evenly. After reassembly, test for proper vacuum and look for any signs of seepage while the system cycles.

• Remove old gasket and clean bowl/discharge seating areas thoroughly
• Ensure the new seal seats flat and evenly before tightening components
• Run a flush/pedal cycle and confirm no leaks or loss of vacuum

Who is this for This KPALAG rubber bowl seal kit is aimed at boat owners, RV enthusiasts, and maintenance technicians who need a dependable replacement for Dometic/Sealand toilets used in mobile settings. If you service pedal-operated VacuFlush or gravity-discharge toilets made after 2001 and want a natural-rubber seal with an anti-stick coating to reduce failures and leaks, this kit offers a practical, OEM-compatible option for routine maintenance and repair.

FAQ

Q: Does this kit replace OEM part 385311462?

A: Yes. This KPALAG kit is a direct replacement for part numbers including 385311462 and compatible OEM codes.

Q: Can I use this seal in toilets with an overflow hole?

A: No. This gasket is for bowls without internal overflow holes and will not fit toilets that include that feature.