---
title: "liquid plastic — Niche Verdict: Worth a look (51/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/arts-crafts-sewing/liquid-plastic"
last_updated: "2026-07-13T23:56:54.641Z"
locale: en
meta:
  description: "liquid plastic shows a sweet-spot price point ($29.67 avg), but soft demand (+0.1% this quarter) keeps it on the watch list."
  "og:description": "liquid plastic shows a sweet-spot price point ($29.67 avg), but soft demand (+0.1% this quarter) keeps it on the watch list."
  "og:title": "liquid plastic — Niche Verdict: Worth a look (51/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **liquid plastic**

**Worth a look**

Shows a sweet-spot price point ($29.67 avg), but soft demand (+0.1% this quarter) keeps it on the watch list.

Market size 26Growth 25Conversion 52Competition 70Returns 94Price range 75Avg price 95Brand share 35Review moat 33Quality gap 50

**Avg price**

**Incredible****$29.67**

avg listing price — sweet spot $15–$100

**Returns**

**Great****1.1%**

return rate — above 6% kills the launch gate

**Price range**

**Great****$6.41–$120.15**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Competition**

**Good****43%**

top-5 click share — leaders hold, buyers still browse

**Conversion**

**Good****4.2%**

search→purchase rate — share of searches ending in a sale

**Quality gap**

**Good****4.5★**

avg incumbent rating — lower means beatable quality

**Brand share**

**Okay****84%**

top-5 brand share — brands hold most of the demand

**Review moat**

**Okay****3,201.29**

avg incumbent reviews — the moat a new listing must climb

**Market size**

**Okay****$108K**

$108K/yr · 86K searches

**Growth**

**Okay****+0.1%**

90-day search growth — must beat 0% to launch

## **Competition**

The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**13 **▼falling

**Sellers**

**81**

**Top-5 brand share**

**84%**

**Open market**

**13%**

- Smooth-On53% - EUPHENG10% - J-B Weld9% - Smooth-On, Inc.8% - LET'S RESIN4% - FGCI3% - Open — no brand owns it (7 brands, 13%)

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%5%$5K10%$11K15%$16K20%$22K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 31 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Smooth-Cast 300 - Bright White Ultra Low Viscosity Liquid Plastic - Pint Unit](https://m.media-amazon.com/images/I/41TyXHOmB1L.jpg)**Smooth-Cast 300 - Bright White Ultra Low Viscosity Liquid Plastic - Pint Unit**Smooth-On**$25.74**4.7★1,318 rev](https://www.amazon.com/dp/B004BN7G0E) [2![Smooth-On Mold Star 16 Fast Platinum Silicone Rubber Silicone Mold Making Kit - Pint Unit](https://m.media-amazon.com/images/I/41ce0WInruL.jpg)**Smooth-On Mold Star 16 Fast Platinum Silicone Rubber Silicone Mold Making Kit - Pint Unit**Smooth-On**$35.94**4.6★778 rev](https://www.amazon.com/dp/B00ELLRSY0) [3![Smooth-On Mold Star 30 Silicone Mold Making Kit - Easy to Use & Long-Lasting Silicone Mold (2-Pound)](https://m.media-amazon.com/images/I/51T2q6qWgOL.jpg)**Smooth-On Mold Star 30 Silicone Mold Making Kit - Easy to Use & Long-Lasting Silicone Mold (2-Pound)**Smooth-On**$36.17**4.6★743 rev](https://www.amazon.com/dp/B00ETAY8RI) [4![Smooth-On Smooth-Cast 305 Liquid Plastic Resin for Special Effects & More White - Pint Unit](https://m.media-amazon.com/images/I/41cBjq8C5oL.jpg)**Smooth-On Smooth-Cast 305 Liquid Plastic Resin for Special Effects & More White - Pint Unit**Smooth-On**$28.83**4.6★222 rev](https://www.amazon.com/dp/B00ZGOSTTY) [5![J-B Weld 50139 Plastic Bonder Body Panel Adhesive and Gap Filler Syringe - Black - 25 ml](https://m.media-amazon.com/images/I/41vE5IIBDjL.jpg)**J-B Weld 50139 Plastic Bonder Body Panel Adhesive and Gap Filler Syringe - Black - 25 ml**J-B Weld**$7.63**4.6★18,716 rev](https://www.amazon.com/dp/B01IBOK7FE)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![GranPeak 8 Strand Braided Fishing Line Pro-Grade Performance PE Braided Line Zero Stretch Smooth Casting Abrasion Resistant High Density and High Visibility (Green 30 LB (300 Yards))](https://m.media-amazon.com/images/I/51dn0zSCmWL.jpg)**GranPeak 8 Strand Braided Fishing Line Pro-Grade Performance PE Braided Line Zero Stretch Smooth Casting Abrasion Resistant High Density and High Visibility (Green 30 LB (300 Yards))**GranPeak**$19.99**25 rev8mo ago](https://www.amazon.com/dp/B0FYDTRD26) [![Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures](https://m.media-amazon.com/images/I/31re8+pfeKL.jpg)**Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures**EUPHENG**$25.75**26 rev1y ago](https://www.amazon.com/dp/B0FDG94PVK) [![Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures](https://m.media-amazon.com/images/I/31IXE3hfbUL.jpg)**Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures**EUPHENG**$16.76**26 rev1y ago](https://www.amazon.com/dp/B0FDGCYKSB) [![WANJAO Tool Dip Rubber Coating Liquid Rubber Dip Flexible Peelable Protective Coating Rubber Coating Sealant Waterproof Flexible Slip Resistance for DIY Craft 150g Black Bottle Open Size 1 Inch](https://m.media-amazon.com/images/I/41bcvkbYElL.jpg)**WANJAO Tool Dip Rubber Coating Liquid Rubber Dip Flexible Peelable Protective Coating Rubber Coating Sealant Waterproof Flexible Slip Resistance for DIY Craft 150g Black Bottle Open Size 1 Inch**WANJAO**$13.44**117 rev1y ago](https://www.amazon.com/dp/B0F8B6M6KH) [![BBDINO Silicone Mold Making Kit Liquid Silicone for Molds Making 30A Sapphire Blue High Strength Silicon Rubber 4.4 lbs 1:1 by Volume Ideal for Mold Casting of Resin/Jewelry/Candle/Concrete/Plaster](https://m.media-amazon.com/images/I/51EuFZXi5IL.jpg)**BBDINO Silicone Mold Making Kit Liquid Silicone for Molds Making 30A Sapphire Blue High Strength Silicon Rubber 4.4 lbs 1:1 by Volume Ideal for Mold Casting of Resin/Jewelry/Candle/Concrete/Plaster**BBDINO**$44.87**3,180 rev3y ago](https://www.amazon.com/dp/B0C6DQZQCQ)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![FGCI Boatyard Polyester Laminating Resin 1 Quart Kit with MEKP Hardener Clear Fiberglass Resin for Boat Repair and Small Layup Projects Made in the USA](https://m.media-amazon.com/images/I/310EFAbRw5L.jpg)**FGCI Boatyard Polyester Laminating Resin 1 Quart Kit with MEKP Hardener Clear Fiberglass Resin for Boat Repair and Small Layup Projects Made in the USA**FGCI**$19.55**4.0★**▲ 278%**](https://www.amazon.com/dp/B006VY78QS) [![Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures](https://m.media-amazon.com/images/I/31IXE3hfbUL.jpg)**Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures**EUPHENG**$16.76**4.0★**▲ 274%**](https://www.amazon.com/dp/B0FDGCYKSB) [![Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures](https://m.media-amazon.com/images/I/31re8+pfeKL.jpg)**Eupheng PlastiCatch Series Plastisol Fishing Lure Making Plastic Rubber Crystal Clear Low Odor Non Yellowing Medium Formula for DIY Fishing Lures**EUPHENG**$25.75**4.0★**▲ 272%**](https://www.amazon.com/dp/B0FDG94PVK) [![FGCI Clear Casting Polyester and UV Resin Kit 8 Pound Bulk Liquid Plastic for Realistic Fake Water Craft Casting and Decorative Projects](https://m.media-amazon.com/images/I/41HpXIZJK6L.jpg)**FGCI Clear Casting Polyester and UV Resin Kit 8 Pound Bulk Liquid Plastic for Realistic Fake Water Craft Casting and Decorative Projects**FGCI**$87.88**4.4★**▲ 271%**](https://www.amazon.com/dp/B00MYAAUQ8) [![GranPeak 8 Strand Braided Fishing Line Pro-Grade Performance PE Braided Line Zero Stretch Smooth Casting Abrasion Resistant High Density and High Visibility (Green 30 LB (300 Yards))](https://m.media-amazon.com/images/I/51dn0zSCmWL.jpg)**GranPeak 8 Strand Braided Fishing Line Pro-Grade Performance PE Braided Line Zero Stretch Smooth Casting Abrasion Resistant High Density and High Visibility (Green 30 LB (300 Yards))**GranPeak**$19.99**4.5★**▲ 267%**](https://www.amazon.com/dp/B0FYDTRD26)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +0.1% search growth over the last 90 days.

2K1KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**17%

*“Reliable product that does exactly what it promises”*

**Ease Of Use**14%

*“Easy to work with”*

**Efficiency**8%

*“did work”*

**Advertised Vs Actual Product**7%

*“As advertised”*

**Adhesion/Stickiness**7%

*“Good stick”*

**Value For Money**5%

*“Reasonably priced”*

**Material Quality**4%

*“Nice material”*

**Durability**4%

*“Having a reliable”*

**Instructions/User Manual/Troubleshooting**4%

*“The instructions are clear”*

**Strength**4%

*“It holds strongly on rigid surfaces”*

### **What buyers complain about **

**Adhesion/Stickiness**10%

*“Not good adhesion”*

**Value For Money**9%

*“It is a little pricey”*

**Functionality-Overall**8%

*“all with negative results”*

**Durability**5%

*“the durability is poor”*

**Leak-Proof**5%

*“Arrived leaking”*

**Ease Of Use**5%

*“Hard to use”*

**Size-Overall**4%

*“But I didnt understand the sizing”*

**Quality-Overall**4%

*“Garbage”*

**Strength**4%

*“Weak hold”*

**Smell**3%

*“Horrible smell too”*

### **Top return reasons **

**Functionality-Overall**17%

**Adhesion/Stickiness**14%

**Leak-Proof**11%

**Advertised Vs Actual Product**9%

**Material Quality**9%

**Size-Overall**8%

**Value For Money**8%

**Defective Material/Parts**6%

**Color**3%

**Maintenance And Repair**2%