---
title: "Fluid Film Black — $1.6M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/fluid-film-black"
last_updated: "2026-08-11T06:50:09.672Z"
locale: en
meta:
description: "Niche score 54/100 · $1.6M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $1.6M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Fluid Film Black — $1.6M/yr Amazon US Niche (2026) - Flapen"
---
# **fluid film black**
**Worth a look**
Shows low returns (0.1%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 87Growth 25Conversion 96Competition 22Returns 99Price range 88Avg price 95Brand share 0Review moat 56Quality gap 21
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.8%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$37.05**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$8.44–$87.09**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Great****$1.6M**
$1.6M/yr · 327K searches
**Review moat**
**Good****1,272.07**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-0.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****73%**
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 United States niche tracking, fluid film black is a $1.6M/yr Amazon United States market (327K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 54/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fluid film black market data**
- **Units sold / yr**
- **30K–40K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$1.1M–$1.5M**
- units × avg price
- **Conversion rate**
- **12.8%**
- **Avg BSR**
- **#252**
- **Page quality**
- **0%**
- **Prime**
- **87%**
- **Sponsored**
- **80%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **77 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▼falling
**Sellers**
**118**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**73%**
Top 20: 100%
**Open market**
**0%**
- Boeshield75% - Fluid Film19% - CRC6% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -0.2% search growth over the last 90 days.
10K6KSpike '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 3.2×
[**Open Trend **](https://flapen.com/research/us/automotive/fluid-film-black/trend)
## **Top fluid film black search terms**
- **boeshield t-9**64K/yr+16.4%15.3% conv. - **fluid film black**101K/yr-4.6%5.3% conv. - **t9 lubricant spray can**25K/yr-27.3%16.2% conv. - **boeshield t-9 rust & corrosion protection**15K/yr+25.8%17.3% conv. - **salt shift rust shield**15K/yr+30.2%0.1% conv. - **boeshield**10K/yr+28.0%10.8% conv. - **t-9 lubricant/protectant**10K/yr-25.5%16.5% conv. - **boeshield t9**11K/yr-5.5%12.0% conv. - **black fluid film**14K/yr-13.3%5.7% conv. - **crc marine corrosion inhibitor**8K/yr+14.9%10.1% conv. [**All search terms **](https://flapen.com/research/us/automotive/fluid-film-black/search-terms)
## **Top fluid film black 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%15%$233K30%$466K45%$700K60%$933K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**BOESHIELD T-9 Rust & Corrosion Protection/Inhibitor and Waterproof Lubrication 12 oz.**Boeshield**$20.50**4.7★5,494 rev](https://www.amazon.com/dp/B001447PEK) [2**Boeshield T-9 Aerosol Can (4 -Ounce) (122184) White**Boeshield**$15.58**4.7★3,767 rev](https://www.amazon.com/dp/B0000DD1DV) [3**Boeshield T-9 Bicycle Chain Waterproof Lubricant and Rust Protection 4 oz Liquid Original Version (122183) White**Boeshield**$12.72**4.7★3,767 rev](https://www.amazon.com/dp/B000GE1F9K) [4**Fluid Film 11.75 oz Rust and Corrosion Inhibitor Spray Black 3 Pack Spray Can Extension Wand Can-Gun1 Premium Can Tool Aerosol Spray**Fluid Film**$46.47**4.6★133 rev](https://www.amazon.com/dp/B0DCSYXD6K) [5**Fluid Film Black Non-Aerosol Long Lasting Corrosion Penetrant & Lubricant Anti-Rust Coating Protects All Metals in Marine and Undercoating in Automotive & Snow-Handling Vehicles 1 Gallon**Fluid Film**$50.76**4.6★1,221 rev](https://www.amazon.com/dp/B08R1GHVNN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Fluid Film 11.75 oz Rust and Corrosion Inhibitor Spray Black 3 Pack Spray Can Extension Wand Can-Gun1 Premium Can Tool Aerosol Spray**Fluid Film**$46.47**133 rev1y ago](https://www.amazon.com/dp/B0DCSYXD6K) [**Fluid Film 11.75 oz Rust and Corrosion Inhibitor Black 6 Pack Spray Can Extension Wand Can-Gun1 Premium Tool Aerosol Spray**Fluid Film**$87.09**103 rev1y ago](https://www.amazon.com/dp/B0DCSX5LPW) [**Fluid Film Black (3 Aerosol Cans) with DU-Most 2 Extension Hose & Nozzle Long Lasting Corrosion Prevention Penetrant & Lubricant Marine Automotive & Snow-Handling Vehicles Undercoating 11.75 Oz**Fluid Film**$52.15**134 rev2y ago](https://www.amazon.com/dp/B0CBMXG4YG) [**Stens FLUID FILM 752-515 Rust and Corrosion Protection-11.75 oz. aerosol can Multi**Fluid Film**$14.55**396 rev5y ago](https://www.amazon.com/dp/B08WRMLPCG) [**Fluid Film Black (6 Aerosol Cans) with DU-Most 2 Extension Hose & Nozzle Long Lasting Corrosion Prevention Penetrant & Lubricant Marine Automotive & Snow-Handling Vehicles Undercoating 11.75 Oz**Fluid Film**$85.04**249 rev5y ago](https://www.amazon.com/dp/B08R7RJSX6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BOESHIELD T-9 Rust & Corrosion Protection/Inhibitor and Waterproof Lubrication 1 oz liquid**Boeshield**$8.44**4.6★**▲ 39%**](https://www.amazon.com/dp/B001AYOK9C) [**Boeshield T-9 Bicycle Chain Waterproof Lubricant and Rust Protection 4 oz Liquid Original Version (122183) White**Boeshield**$12.72**4.7★**▲ 28%**](https://www.amazon.com/dp/B000GE1F9K) [**BOESHIELD T-9 Rust & Corrosion Protection/Inhibitor and Waterproof Lubrication 12 oz.**Boeshield**$20.50**4.7★**▲ 27%**](https://www.amazon.com/dp/B001447PEK) [**Fluid Film Black (3 Aerosol Cans) with DU-Most 2 Extension Hose & Nozzle Long Lasting Corrosion Prevention Penetrant & Lubricant Marine Automotive & Snow-Handling Vehicles Undercoating 11.75 Oz**Fluid Film**$52.15**4.6★**▲ 26%**](https://www.amazon.com/dp/B0CBMXG4YG) [**Boeshield T-9 Aerosol Can (4 -Ounce) (122184) White**Boeshield**$15.58**4.7★**— 7%**](https://www.amazon.com/dp/B0000DD1DV)
**~~View all trending →~~**
## **What buyers say about fluid film black**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“Fair rating”*
**Rusts/Corrodes**20%
*“always appreciated its rust protection capabilities”*
**Value For Money**10%
*“Worth the money”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Efficiency**5%
*“a very effective productive product I learned about in Sail Magazine”*
**Ease Of Use**5%
*“easy to use”*
**Spray/Flow**3%
*“Very easy to spray on”*
**Ease Of Cleaning**3%
*“The cleaner does its job”*
**Durability**3%
*“has held up well”*
**Drop/Impact Protection**2%
*“saw how well it protected”*
### **What buyers complain about **
**Rusts/Corrodes**18%
*“have a problem with rusting”*
**Spray/Flow**15%
*“Stopped spraying”*
**Value For Money**12%
*“it is pretty expensive”*
**Size-Overall**5%
*“it did not fit well on the cans”*
**Ease Of Cleaning**4%
*“A real mess”*
**Stain Resistance**3%
*“The black die is unnecessary and only causes a mess and stains clothing”*
**Jamming/Clogging**3%
*“the drop wise applicator constantly clogs”*
**Instructions/User Manual/Troubleshooting**3%
*“It's not easy to use without readable instructions that aren't covered with barcode sticker”*
**Color**2%
*“The black die is unnecessary and only causes a mess and stains clothing”*
**Add-Ons/Attachments**2%
*“Can extension does not fit well”*
### **Top return reasons **
**Leak-Proof**52%
**Color**9%
**Functionality-Overall**7%
**Advertised Vs Actual Product**5%
**Spray/Flow**5%
**Inflation/Deflation**3%
**Value For Money**3%
**Ease Of Use**3%
**Product Condition**3%
**Defective Material/Parts**3%
## **Common questions**
- **Is fluid film black profitable to sell on Amazon United States?**
- The niche generates $1.6M/yr across 15 tracked products. 90-day search growth is -0.2%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the fluid film black niche?**
- 3 brands and 118 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in fluid film black?**
- Top complaints mined from reviews: Rusts/Corrodes, Spray/Flow, Value For Money. The return rate is 0.1%.
- **When does demand for fluid film black peak?**
- Demand peaks in Oct–Nov; the busiest month runs 3.2× the quietest.
- **What does it cost to enter the fluid film black niche?**
- Listings span $8.44–$87.09; the average listing price is $37.05 (sweet spot $15–$100). The average incumbent carries 1,272 reviews — the moat a new listing must climb.
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