sealand toilet parts
Worth a lookShows a sweet-spot price point ($31.60 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$31.60avg listing price — sweet spot $15–$100
Review moat
Great233.17avg incumbent reviews — the moat a new listing must climb
Brand share
Great57%top-5 brand share — no brand owns this niche
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Growth
Good+57.5%90-day search growth — must beat 0% to launch
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Returns
Good2.8%return rate — above 5% kills the launch gate
Price range
Okay$9.77–$186.06cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay3.5%search→purchase rate — share of searches ending in a sale
Market size
Bad$26K$26K/yr · 24K searches
According to Flapen's Amazon United States niche tracking, sealand toilet parts is a $26K/yr Amazon United States market (24K searches/yr). The top 5 brands hold 57% of demand. Demand peaks in Jul–Aug–Sep. Verdict: Worth a look — 60/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
sealand toilet parts market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $40K–$47K
- units × avg price
- Conversion rate
- 3.5%
- Avg BSR
- #413
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 86%
- Out of stock
- 0.9%
- Avg brand age
- 40 months
- Avg seller age
- 151 days
Competition & brand share
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.Brands
26 falling
Sellers
124
Top-5 brand share
57%
Top 20: 95%
Top-5 click share
43%
Top 20: 84%
Open market
39%
- KPALAG22%
- Beech Lane14%
- Dometic11%
- Funmit5%
- nipponAsia5%
- TQPONLY4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +57.5% search growth over the last 90 days.Peak months: Jul, Aug, Sep · busiest ÷ quietest = 2.6×
Top sealand toilet parts search terms
- sealand rv toilet parts6K/yr
- sealand toilet parts4K/yr
- dometic sealand toilet parts6K/yr
- vacuflush marine toilet parts4K/yr
- dometic 210 toilet parts4K/yr
Top sealand toilet parts products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Beech Lane RV Upgraded Toilet Water Valve for Dometic Sealand EcoVac Vacuflush Pedal Flush Toilets Brass Cap For Leak Resistance High Performance in Freezing Conditions Replaces 385314349
Beech Lane$20.004.4★942 rev
KPALAG RV Toilet Seal Kit Replacement Compatible with Dometic Sealand VacuFlush Toilets 110 111 210 510 Replace# 385311462 385310677
KPALAG$14.014.4★129 rev
Genuine Dometic OEM Rubber Toilet Seal Kit 385311462 | 2001 Toilets & Newer | Black
Dometic$41.974.6★748 rev
Funmit 385314349 RV Toilet Water Valve Kit Replacement for Pedal Flush Toilets for Camper Trailer Boat | Premium Performance in Prevention of Leakage | Increased Freeze Resistance
Funmit$16.633.9★484 rev
TQPONLY RV Toilet Water Valve Parts | For Dometic Sealand EcoVac Vacuflush RV/Camper/Trailer Toilet | Replaces 385314349 Pedal Flush Valve Replacement Kits
TQPONLY$11.074.2★91 rev
Newest
by launch date
KPALAG RV and Marine Toilet Rubber Bowl Seal Kit Fit for Dometic/Sealand 210 110 111 510 Replace# 385311462 Flush Ball and Bowl Seal Gasket Natural Rubber Non-Stick CoatingW/o Overflow Hole
KPALAG$28.729 rev
Kylazer 385311462 RV Toilet Seal Kit Replacement Part
Kylazer$18.0513 rev
Ophjerg 385316906 RV Toilet Vacuum Breaker Kit Compatible with Dometic Sealand Toilets Toilet Parts for Dometic Sealand VacuFLush Traveler Toilets without Hand Sprayer Hook Up
Ophjerg$12.6932 rev
WEHOPE 385310681 RV Toilet Flush Ball and Shaft Cartridge Kit
WEHOPE$24.4738 rev
Oyviny RV Toilet Flush Seal Replacement Kit Part 385316140 & 385311462 Toilet Rubber Ball Bowl Gasket for Dometic/Sealand/Mansfield/VacuFlush and Travel Trailer RV Camper/Marine Toilet
Oyviny$12.7845 rev
Trending
90-day click momentumKPALAG RV and Marine Toilet Rubber Bowl Seal Kit Fit for Dometic/Sealand 210 110 111 510 Replace# 385311462 Flush Ball and Bowl Seal Gasket Natural Rubber Non-Stick CoatingW/o Overflow Hole
KPALAG$28.725.0★
Kylazer 385311462 RV Toilet Seal Kit Replacement Part
Kylazer$18.054.4★
Replacement for Dometic Sealand 385318032 Vacuum Tank Switch Kit White
sixcow$186.063.6★
385314349 RV Water Valve Assembly Camper Trailer Toilet Repair Kit Compatible with Dometic Sealand EcoVac Vacuflush Pedal Flush Toilets
FLYINGAMZ$16.604.5★
385230325 Toilet Vacuum Breaker for Hand Spray Replacement for Dometic RV Toilet Fit for Sealand VacuFlush and Traveler Toilets
VOBRAMY$21.104.2★
What buyers say about sealand toilet parts
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfect”
“The quality seems solid”
“Easy installation”
“Good value”
“Worked as advertised”
“there are no water leaks”
“Works great”
“Seems durable and no leaks so far”
“Works great, easy to put back on”
“making it a comprehensive kit for restoring your RV or boat toilet vacuum pump system”
What buyers complain about
“it leaks”
“Failed after less than 20 flushes”
“Garbage”
“Although no instructions”
“Faulty product”
“Even though they say it fits it doesn't fit”
“Still sitting over there collecting dust, bad description”
“Unrelated to installation”
“If air flows, its bad”
“Don't buy, poor quality, plastic ball valve made of very thin material”
Top return reasons
Common questions
- Is sealand toilet parts profitable to sell on Amazon United States?
- The niche generates $26K/yr across 35 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +57.5%. Flapen's verdict: Worth a look (60/100).
- How competitive is the sealand toilet parts niche?
- 26 brands and 124 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 57% of demand.
- What do buyers complain about in sealand toilet parts?
- Top complaints mined from reviews: Leak-Proof, Durability, Quality-Overall. The return rate is 2.8%.
- When does demand for sealand toilet parts peak?
- Demand peaks in Jul–Aug–Sep; the busiest month runs 2.6× the quietest.
- What does it cost to enter the sealand toilet parts niche?
- Listings span $9.77–$186.06; the average listing price is $31.60 (sweet spot $15–$100). The average incumbent carries 233 reviews — the moat a new listing must climb.