kilner jar seals
Skip itPrices mostly outside the sweet spot ($2.80–$7.23) — this niche doesn't clear our bar today.
Conversion
Incredible19.9%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Review moat
Good514.56avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad£69K£69K/yr · 76K searches
Brand share
Bad93%top-5 brand share — brand-locked demand
Growth
Bad-18.2%90-day search growth — must beat 0% to launch
Competition
Bad83%top-5 click share — a locked-up shelf
Avg price
Bad£4.59avg listing price — sweet spot $15–$100
Price range
Bad£2.80–£7.23cheapest 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
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.Peak months: Aug, Sep, Oct, Nov · busiest ÷ quietest = 2.7×
Top kilner jar seals search terms
- kilner jar seals60K/yr
- kilner jar seals replacement5K/yr
- rubber jar seals4K/yr
- jar seals4K/yr
- rubber seals for kilner jars3K/yr
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.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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£2.804.7★3,325 rev
8 Pcs Replacement Silicone Seals for Kilner Jars Airtight Seals for Food Storage Reusable Leakproof Durable Kitchen Accessories
Plurvian£3.454.2★5 rev
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£5.574.6★695 rev
8Pcs Replacement Silicone Seals for Kilner Jar Seals silicone jar gaskets Grade Silicone Sturdy Soft and Elastic Replacement Gaskets Keep Food Freshness
Vierone£4.404.5★82 rev
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£4.164.6★338 rev
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£7.233 rev
20-Piece Replacement Seals Silicone Seals for Kilner Jar Seals Food Preservation Airtight Storage for Kitchen Grade Silicone jar gaskets Keep Food Freshness
XNBTFK£6.0044 rev
8 Pcs Replacement Silicone Seals for Kilner Jars Airtight Seals for Food Storage Reusable Leakproof Durable Kitchen Accessories
Plurvian£3.455 rev
8Pcs Replacement Silicone Seals Compatible with Kilner Jars Airtight Silicone Food Storage Seals Durable & Reusable Preserving Seals for Jams Pickles & Fruits
Eclovane£3.7116 rev
8Pcs Replacement Silicone Seals for Kilner Jar Seals silicone jar gaskets Grade Silicone Sturdy Soft and Elastic Replacement Gaskets Keep Food Freshness
Vierone£4.4082 rev
Trending
90-day click momentumSet 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£7.235.0★
8 Pcs Replacement Silicone Seals for Kilner Jars Airtight Seals for Food Storage Reusable Leakproof Durable Kitchen Accessories
Plurvian£3.454.2★
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£4.164.6★
8Pcs Replacement Silicone Seals Compatible with Kilner Jars Airtight Silicone Food Storage Seals Durable & Reusable Preserving Seals for Jams Pickles & Fruits
Eclovane£3.714.7★
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£5.574.6★
What buyers say about kilner jar seals
What buyers praise and complain about, mined from review topics.What buyers love
“Fit great”
“Good quality”
“does its job”
“Excellent value”
“Very happy with the seals”
“Easy to use”
“Perfect my jars are like new again”
“Perfect Jar seals”
“Long lasting”
“Does the job well”
What buyers complain about
“Wrong size for killer”
“Too thin”
“There is a serious flaw with these seals for they emit the sharp piercing cheap fragrance of a house cleaner”
“jars are leaking”
Top return reasons
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.