---
title: "Kilner Jar Seals — £69K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/kilner-jar-seals"
last_updated: "2026-08-01T04:06:45.933Z"
locale: en
meta:
description: "Niche score 36/100 · £69K/yr market · 76K searches/yr · £4.59 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · £69K/yr market · 76K searches/yr · £4.59 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Kilner Jar Seals — £69K/yr Amazon UK Niche (2026) - Flapen"
---
# **kilner jar seals**
**Skip it**
Prices mostly outside the sweet spot ($2.80–$7.23) — this niche doesn't clear our bar today.
Market size 17Growth 16Conversion 100Competition 14Returns 99Price range 0Avg price 13Brand share 17Review moat 75Quality gap 30
**Conversion**
**Incredible****19.9%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.3%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****514.56**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****£69K**
£69K/yr · 76K searches
**Brand share**
**Bad****93%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-18.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****83%**
top-5 click share — a locked-up shelf
**Avg price**
**Bad****£4.59**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£2.80–£7.23**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, kilner jar seals is a £69K/yr Amazon United Kingdom market (76K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Aug–Sep–Oct–Nov. Verdict: Skip it — 36/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kilner jar seals market data**
- **Units sold / yr**
- **13K–15K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£57K–£69K**
- units × avg price
- **Conversion rate**
- **19.9%**
- **Avg BSR**
- **#54**
- **Page quality**
- **0%**
- **Prime**
- **89%**
- **Sponsored**
- **67%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **—flat
**Sellers**
**39**
**Top-5 brand share**
**93%**
Top 20: 100%
**Top-5 click share**
**83%**
Top 20: 100%
**Open market**
**3%**
- Kilner68% - Plurvian8% - Vierone7% - XNBTFK5% - Eclovane5% - ZINNIAUK4% - Open — no brand owns it (1 brand, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 88 weeks — -18.2% search growth over the last 90 days.
3K2KPrime Day '25Spike '25 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Aug, Sep, Oct, Nov · busiest ÷ quietest = 2.7×
[**Open Trend **](https://flapen.com/research/uk/home-garden/kilner-jar-seals/trend)
## **Top kilner jar seals search terms**
- **kilner jar seals**60K/yr-14.2%17.5% conv. - **kilner jar seals replacement**5K/yr-7.7%17.3% conv. - **rubber jar seals**4K/yr-45.4%2.3% conv. - **jar seals**4K/yr-43.5%5.1% conv. - **rubber seals for kilner jars**3K/yr-32.3%14.0% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/kilner-jar-seals/search-terms)
## **Top kilner jar seals 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%£10K30%£21K45%£31K60%£42K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Kilner Replacement Rubber Seals Pack of 6 Airtight Food-Safe Seals for Round and Square Clip Top Jars (0.35 L to 2 Litre) Durable Reusable and Ideal for Preserving and Storage**Kilner**£2.80**4.7★3,325 rev](https://www.amazon.co.uk/dp/B004O8SCMM) [2**8 Pcs Replacement Silicone Seals for Kilner Jars Airtight Seals for Food Storage Reusable Leakproof Durable Kitchen Accessories**Plurvian**£3.45**4.2★5 rev](https://www.amazon.co.uk/dp/B0FCYFFJYC) [3**Kilner Preserve Sealing Discs 7cm (Pack of 12) Replacement Tin Sealing Discs for 0.25L 0.5L and 1L Kilner Preserving Jars Airtight and Leak Proof**Kilner**£5.57**4.6★695 rev](https://www.amazon.co.uk/dp/B0042FTT88) [4**8Pcs Replacement Silicone Seals for Kilner Jar Seals silicone jar gaskets Grade Silicone Sturdy Soft and Elastic Replacement Gaskets Keep Food Freshness**Vierone**£4.40**4.5★82 rev](https://www.amazon.co.uk/dp/B0DQXHN847) [5**Kilner Replacement Rubber Seals Pack of 6 Airtight Food-Safe Seals for 3 Litre Round Clip Top Jars Durable Reusable and Perfect for Preserving and Storage**Kilner**£4.16**4.6★338 rev](https://www.amazon.co.uk/dp/B019E21EEU)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Set of 6 Kilner Replacement Jar Seals Standard Rubber Rings for Clip Top Jars (0.35L 0.5L 1L 1.5L 2 Litre) Airtight Silicone Gaskets for Preserving Pickling Storage Food Safe Sealing Rings**ZINNIAUK**£7.23**3 rev5mo ago](https://www.amazon.co.uk/dp/B0GP1F3H4L) [**20-Piece Replacement Seals Silicone Seals for Kilner Jar Seals Food Preservation Airtight Storage for Kitchen Grade Silicone jar gaskets Keep Food Freshness**XNBTFK**£6.00**44 rev1y ago](https://www.amazon.co.uk/dp/B0FH524134) [**8 Pcs Replacement Silicone Seals for Kilner Jars Airtight Seals for Food Storage Reusable Leakproof Durable Kitchen Accessories**Plurvian**£3.45**5 rev1y ago](https://www.amazon.co.uk/dp/B0FCYFFJYC) [**8Pcs Replacement Silicone Seals Compatible with Kilner Jars Airtight Silicone Food Storage Seals Durable & Reusable Preserving Seals for Jams Pickles & Fruits**Eclovane**£3.71**16 rev1y ago](https://www.amazon.co.uk/dp/B0F3WQ3SD8) [**8Pcs Replacement Silicone Seals for Kilner Jar Seals silicone jar gaskets Grade Silicone Sturdy Soft and Elastic Replacement Gaskets Keep Food Freshness**Vierone**£4.40**82 rev1y ago](https://www.amazon.co.uk/dp/B0DQXHN847)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Set of 6 Kilner Replacement Jar Seals Standard Rubber Rings for Clip Top Jars (0.35L 0.5L 1L 1.5L 2 Litre) Airtight Silicone Gaskets for Preserving Pickling Storage Food Safe Sealing Rings**ZINNIAUK**£7.23**5.0★**▲ 424%**](https://www.amazon.co.uk/dp/B0GP1F3H4L) [**8 Pcs Replacement Silicone Seals for Kilner Jars Airtight Seals for Food Storage Reusable Leakproof Durable Kitchen Accessories**Plurvian**£3.45**4.2★**▲ 234%**](https://www.amazon.co.uk/dp/B0FCYFFJYC) [**Kilner Replacement Rubber Seals Pack of 6 Airtight Food-Safe Seals for 3 Litre Round Clip Top Jars Durable Reusable and Perfect for Preserving and Storage**Kilner**£4.16**4.6★**▲ 77%**](https://www.amazon.co.uk/dp/B019E21EEU) [**8Pcs Replacement Silicone Seals Compatible with Kilner Jars Airtight Silicone Food Storage Seals Durable & Reusable Preserving Seals for Jams Pickles & Fruits**Eclovane**£3.71**4.7★**▲ 36%**](https://www.amazon.co.uk/dp/B0F3WQ3SD8) [**Kilner Preserve Sealing Discs 7cm (Pack of 12) Replacement Tin Sealing Discs for 0.25L 0.5L and 1L Kilner Preserving Jars Airtight and Leak Proof**Kilner**£5.57**4.6★**— 8%**](https://www.amazon.co.uk/dp/B0042FTT88)
**~~View all trending →~~**
## **What buyers say about kilner jar seals**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**34%
*“Fit great”*
**Quality-Overall**23%
*“Good quality”*
**Advertised Vs Actual Product**11%
*“does its job”*
**Value For Money**6%
*“Excellent value”*
**Locking Mechanism**5%
*“Very happy with the seals”*
**Ease Of Use**5%
*“Easy to use”*
**Product Condition**3%
*“Perfect my jars are like new again”*
**Leak-Proof**3%
*“Perfect Jar seals”*
**Durability**3%
*“Long lasting”*
**Efficiency**2%
*“Does the job well”*
### **What buyers complain about **
**Size-Overall**33%
*“Wrong size for killer”*
**Thickness**25%
*“Too thin”*
**Smell**17%
*“There is a serious flaw with these seals for they emit the sharp piercing cheap fragrance of a house cleaner”*
**Leak-Proof**8%
*“jars are leaking”*
### **Top return reasons **
**Size-Overall**71%
**Advertised Vs Actual Product**9%
**Color**8%
**Compatibility-Overall**5%
**Quality-Overall**3%
**Ease Of Use**3%
**Smell**3%
**Thickness**3%
## **Common questions**
- **Is kilner jar seals profitable to sell on Amazon United Kingdom?**
- The niche generates £69K/yr across 9 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -18.2%. Flapen's verdict: Skip it (36/100).
- **How competitive is the kilner jar seals niche?**
- 7 brands and 39 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 93% of demand.
- **What do buyers complain about in kilner jar seals?**
- Top complaints mined from reviews: Size-Overall, Thickness, Smell. The return rate is 0.3%.
- **When does demand for kilner jar seals peak?**
- Demand peaks in Aug–Sep–Oct–Nov; the busiest month runs 2.7× the quietest.
- **What does it cost to enter the kilner jar seals niche?**
- Listings span £2.80–£7.23; the average listing price is £4.59 (sweet spot $15–$100). The average incumbent carries 515 reviews — the moat a new listing must climb.
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