---
title: "Dekasyl — €128K/yr Amazon DE Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/de/auto-motorrad/dekasyl"
last_updated: "2026-08-09T21:27:05.586Z"
locale: en
meta:
description: "Niche score 49/100 · €128K/yr market · 78K searches/yr · €19.13 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · €128K/yr market · 78K searches/yr · €19.13 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Dekasyl — €128K/yr Amazon DE Niche (2026) - Flapen"
---
# **dekasyl**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 29Growth 84Conversion 81Competition 20Returns 97Price range 75Avg price 85Brand share 0Review moat 29Quality gap 17
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****€19.13**
avg listing price — sweet spot $15–$100
**Growth**
**Great****+83.4%**
90-day search growth — must beat 0% to launch
**Conversion**
**Great****8.6%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****€8.23–€35.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****€128K**
€128K/yr · 78K searches
**Review moat**
**Okay****3,569.33**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****76%**
top-5 click share — a locked-up shelf
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon Germany niche tracking, dekasyl is a €128K/yr Amazon Germany market (78K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jul–Aug. Verdict: Skip it — 49/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dekasyl market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **€115K–€153K**
- units × avg price
- **Conversion rate**
- **8.6%**
- **Avg BSR**
- **#24**
- **Page quality**
- **0%**
- **Prime**
- **75%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **52 months**
- **Avg seller age**
- **178 days**
## **Competition & brand share**
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▼falling
**Sellers**
**45**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**76%**
Top 20: 100%
**Open market**
**0%**
- Dekalin79% - SIKA16% - Dekaseal 89365%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +83.4% search growth over the last 90 days.
4K3KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jul, Aug · busiest ÷ quietest = 4.6×
[**Open Trend **](https://flapen.com/research/de/auto-motorrad/dekasyl/trend)
## **Top dekasyl search terms**
- **dekaseal 8936**29K/yr+95.3%9.5% conv. - **dekalin**15K/yr+82.5%4.9% conv. - **dekaseal**11K/yr+47.2%7.2% conv. - **dekalin dekaseal 8936**7K/yr+107.2%9.6% conv. - **dekalin dekaseal 8936 weiß**4K/yr+144.3%8.5% conv. - **dekasyl**5K/yr+68.7%4.0% conv. - **dekasil dichtstoff 8936 weiß**4K/yr+54.0%9.8% conv. - **dekasil**2K/yr+67.6%6.7% conv. - **dekalin 8936**2K/yr+62.3%6.2% conv. [**All search terms **](https://flapen.com/research/de/auto-motorrad/dekasyl/search-terms)
## **Top dekasyl 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.
0%10%€13K20%€26K30%€38K40%€51K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Dekalin L0906G DekaSeal 8936 - lichtgrau**Dekalin**€15.80**4.8★1,017 rev](https://www.amazon.de/dp/B00DSNSU3U) [2**Dekalin Dichtstoff Dekaseal 8936 310ml Anthrazit für Rahmen Abläufe oder Wohnwagen und Wohnmobil Luken**Dekalin**€16.50**4.8★648 rev](https://www.amazon.de/dp/B00VS105GE) [3**Dekalin Dekaseal 8936 Dichtstoff Doppelpack hellgrau für Rahmen Abläufe oder Wohnwagen und Wohnmobil Luken**Dekalin**€33.57**4.8★331 rev](https://www.amazon.de/dp/B06XJRLH98) [4**Dekalin Dichtmasse Dekaseal 8936 haftstarker Kleb- und Dichtstoff 310ml**Dekalin**€15.50**4.8★1,017 rev](https://www.amazon.de/dp/B00DSNSST6) [5**Sika Dichtstoff Sikaflex-522 Weiß ideal für Fugen innen und außen UV-stabil und witterungsbeständig gute Haftung -300 ml**SIKA**€8.23**4.7★19,087 rev](https://www.amazon.de/dp/B08BZCXQCH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SIKA - Butyldichtstoff - SikaLastomer-514 grau - abtupfbare Dichtmasse für wiederlösbare Abdichtungen - dauerklebrig und elastisch - 310 ml**SIKA**€12.91**281 rev1y ago](https://www.amazon.de/dp/B0D94FGC3L) [**Sika Dichtstoff Sikaflex-522 schwarz ideal für Fugen innen und außen UV-stabil und witterungsbeständig gute Haftung -300 ml**SIKA**€8.25**19,087 rev4y ago](https://www.amazon.de/dp/B09N7FVNFF) [**Sika Dichtstoff Sikaflex-522 Weiß ideal für Fugen innen und außen UV-stabil und witterungsbeständig gute Haftung -300 ml**SIKA**€8.23**19,087 rev6y ago](https://www.amazon.de/dp/B08BZCXQCH) [**Dekalin Dekaseal 8936 hellgrau**Dekaseal 8936**€14.39**273 rev6y ago](https://www.amazon.de/dp/B07WV461B6) [**2x Dekalin Dichtmasse Dekaseal 8936 haftstarker Kleb- und Dichtstoff 310ml schwarz 2 x 310 ml**Dekalin**€35.99**146 rev6y ago](https://www.amazon.de/dp/B07WNYRGL2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Dekalin Dekaseal 8936 hellgrau**Dekaseal 8936**€14.39**4.7★**▲ 52%**](https://www.amazon.de/dp/B07WV461B6) [**Dekalin Dichtmasse Dekaseal 8936 haftstarker Kleb- und Dichtstoff 310ml**Dekalin**€15.50**4.8★**▲ 42%**](https://www.amazon.de/dp/B00DSNSST6) [**Dekalin 101 08917 - MS-1 DEKasyl MS-1 Kartusche weiß 290ml**Dekalin**€15.09**4.7★**▲ 41%**](https://www.amazon.de/dp/B07KFGD8PZ) [**Dekalin Dekaseal 8936 Dichtstoff Doppelpack hellgrau für Rahmen Abläufe oder Wohnwagen und Wohnmobil Luken**Dekalin**€33.57**4.8★**▲ 16%**](https://www.amazon.de/dp/B06XJRLH98) [**Dekalin L0903W DEKAsyl MS-5 290 ml weiß**Dekalin**€18.00**4.8★**— 10%**](https://www.amazon.de/dp/B00NXYTS4E)
**~~View all trending →~~**
## **What buyers say about dekasyl**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Qualität insgesamt**31%
*“Super Produkt”*
**Haftung/Klebrigkeit**24%
*“Flexible Dichtmasse”*
**beworben Vs Tatsächliches Produkt**14%
*“Hält was es verspricht”*
**Preis-Leistungs-Verhältnis**4%
*“Preislich fair”*
**Materialqualität**3%
*“Top Material für den Camper Ausbau, schnelle Lieferung”*
**Einfache Reinigung**3%
*“Eine der besten Dichtungsmassen die es gibt”*
**Benutzerfreundlichkeit**3%
*“War recht einfach in der Handhabung”*
**Effizienz**3%
*“Lässt sich gut verarbeiten”*
**Gesamtgröße**2%
*“Passt”*
**Funktionalität insgesamt**2%
*“Lässt sich sehr gut verarbeiten”*
### **What buyers complain about **
**Preis-Leistungs-Verhältnis**23%
*“Nicht sehr kundenfreundlich bei einem so hochpreisigen Produkt”*
**Filterung**20%
*“Abdichtung”*
**beworben Vs Tatsächliches Produkt**10%
*“Produkt Beschreibung verwirrend”*
**Benutzerfreundlichkeit**10%
*“kann man garnicht alles benutzen, da die Hälfte nach hinten raus kommt”*
### **Top return reasons **
**Farbe**35%
**Haftung/Klebrigkeit**13%
**Gesamtgröße**10%
**Funktionalität insgesamt**7%
**Kompatibilität – insgesamt**7%
**Defekt Material/Teile**4%
**Materialqualität**4%
**beworben Vs Tatsächliches Produkt**3%
**Auslaufsicher**3%
**Produktzustand**2%
## **Common questions**
- **Is dekasyl profitable to sell on Amazon Germany?**
- The niche generates €128K/yr across 12 tracked products. 90-day search growth is +83.4%. Flapen's verdict: Skip it (49/100).
- **How competitive is the dekasyl niche?**
- 3 brands and 45 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in dekasyl?**
- Top complaints mined from reviews: Preis-Leistungs-Verhältnis, Filterung, beworben Vs Tatsächliches Produkt. The return rate is 0.5%.
- **When does demand for dekasyl peak?**
- Demand peaks in May–Jul–Aug; the busiest month runs 4.6× the quietest.
- **What does it cost to enter the dekasyl niche?**
- Listings span €8.23–€35.99; the average listing price is €19.13 (sweet spot $15–$100). The average incumbent carries 3,569 reviews — the moat a new listing must climb.
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