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Plastic Filler

a small market ($73K/yr) — Plastic Filler doesn't clear our bar today.

Flapen Score

44
Skip it
Market size 18Growth 45Conversion 97Competition 23Returns 98Price range 33Avg price 34Brand share 21Review moat 26Quality gap 48
This niche Category average

Is Plastic Filler profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Plastic Filler is a £73K/yr Amazon United Kingdom market (49K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 44/100.

Plastic Filler: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved +15.6% over the last 90 days and 14.5% of searches end in a purchase.

£73K

revenue / yr

Units sold / yr8K
Search volume / yr+15.6%49K
Conversion rate14.5%
Avg price£10.13

Who owns the niche?

The top 5 brands hold 92% of demand, so 8% of the market is open.

8%

open market share

Brands · sellers8 · 95
Top-5 product click share72%
Open market8%
Avg brand age46 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.

0/100

page quality · 18 products

Sponsored placement44%
New entrants (1y)1· 1 succeeded
Avg rating4.5★
Avg reviews3,855

Top Plastic Filler products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

£0£7K£15K£22K£29K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

8 flat

Sellers

95

Top-5 brand share

92%

Top 20: 96%

Top-5 click share

72%

Top 20: 100%

Open market

5%

  • J-B Weld79%
  • Mytovosn4%
  • --4%
  • GORILLA4%
  • Ema3%
  • ADVANCEDSIL3%
  • Open — no brand owns it (2 brands, 5%)

Plastic Filler demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume49KCVR14.5%Products18Brands8Top 5 Brands92%OOS Rate0.0%Rating4.5★Reviews3,855Avg BSR#105
2K1KPrime Day '26Oct '25Nov '25Jan '26Mar '26Apr '26Jun '26

Top Plastic Filler search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • plastic weld22K/yr
  • jb weld plastic bonder17K/yr
  • jb weld plastic5K/yr
  • jb plastic weld3K/yr
  • plastic weld glue3K/yr

What reviews say buyers love and hate about Plastic Filler

What buyers mention most, as a share of all reviews.

What buyers love

84% of reviews
Adhesion/Stickiness16%

sticks real good

Quality-Overall16%

Astonishing product

Value For Money12%

Worth it

Ease Of Use9%

It is easy to mix and apply, making it convenient for quick fixes around the house

Advertised Vs Actual Product8%

Does the job nicely

What buyers complain about

70% of reviews
Adhesion/Stickiness20%

Terrible glue

Functionality-Overall13%

basic operation failed

Durability6%

It broke again

Assembly/Installation6%

the setting time was definitley not 5 minutes

Hard Feel5%

Hardens in bottle

Plastic Filler return rate & reasons

Why buyers send it back, as a share of all return requests.

0.4%

Return rate

14%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Functionality-Overall
23%
2Adhesion/Stickiness
13%
3Defective Material/Parts
7%
4Color
7%
5Maintenance And Repair
7%

Common Plastic Filler questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Plastic Filler 44/100 on Amazon United Kingdom — Skip it. The niche generates £73K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. Search demand moved +15.6% over the last 90 days.
Plastic Filler buyers on Amazon United Kingdom complain most about Adhesion/Stickiness, Functionality-Overall, Durability, the themes mined from the niche's reviews. Its return rate is 0.4%.