LockNJar Mason Jar Vacuum Sealer

£64.00
£64.00
£128.00
  • Powerful -80 kPa suction
  • One-touch automatic sealing
  • Rechargeable 2000mAh battery
  • 12-month quality warranty
Color:
The Solution

Meet LockNJar

The electric mason jar sealer that combines -80 kPa suction and smart auto-stop for deep food preservation. Freshness, at last.

Kitchen Waste

Food Spoilage

  • Waking up to spoiled, fuzzy produce
  • Dealing with messy, half-sealed bags
  • Using expensive, one-off storage plastic
  • Throwing away money on wasted groceries
With LockNJar

Natural Freshness

  • Targeted sealing for multiple jar sizes
  • Vacuum penetration allows for long-term storage
  • Portable design for use anywhere in the UK
  • Easy operation for all skill levels

-80 kPa Therapy

Precise electric vacuum

Cordless Performance

USB-C rechargeable

Point Sealing

Dual jar size target

Eco-Friendly Tech

Oxygen-free preservation

Upgrade Your Storage Routine
Key Innovation

Engineered for effective food preservation

Industrial Suction

Soggy produce and spoiled leftovers are a thing of the past

Restore your kitchen efficiency and stop wasting food. The LockNJar’s precision -80 kPa suction penetrates deep into the jar space, removing oxygen and mimicking professional industrial sealers without the need for bulky, expensive equipment.

  • Powerful -80 kPa vacuum
  • Fast 6–8 second sealing
  • Instant air removal

Targeted Suction

-80 kPa • Pure Vacuum • Freshness

Operation Type

One-Touch Sealing

Smart Tech

Pure efficiency with smart sealing tech

Total food security without the guesswork. LockNJar offers a smart, automatic approach to preservation. By focusing suction on standard mason jars, it helps lock in flavour and nutrients, promoting a more organised and waste-free lifestyle for your favourite family meals.

  • Smart auto-stop sensor
  • LED battery level display
  • Quiet under-60dB motor
Kitchen Ready

Targeted freshness anywhere in the UK

Designed for the modern UK lifestyle, LockNJar is durable, portable, and requires no permanent plugging in. Whether you're in a busy London flat, a caravan in the Highlands, or a weekend break in the Peak District, fresh food is always within reach.

  • Type-C charging port
  • Dual jar size compatibility
  • Compact travel-ready design

2000 mAh

Battery

Yes

Portable

Simplicity

Preserving your groceries is this simple

01

Position

Place the LockNJar sealer directly onto the lid of your regular or wide-mouth mason jar.

02

Press

Press the one-touch button to start the -80 kPa electric vacuum sealing process.

03

Seal Fresh

Wait 6-8 seconds. The sealer will automatically stop when the optimal vacuum is reached, locking in freshness.

Deep vacuum penetration
Automatic stop sensor
Long-life battery
Start Preserving Now

Perfect for: Pickles, Jams, Grains, & Meal Prep

The Comparison

Why LockNJar is the favourite for UK kitchens

Scroll to compare sealing types
Preservation Method
LockNJar -80 kPa Suction
Manual Hand Pumps
Bulky Countertop Sealers
Single-Use Plastic Bags
Usability Profile Automatic & Cordless Requires Physical Effort Takes Up Counter Space Harmful to Environment
Targeted Vacuum Power
Kitchen Storage Tool
Everyday Convenience Use Anywhere Anytime Inconsistent seal Power cord dependent Non-reusable waste
Pure Electric Suction
Seal Strength Professional -80 kPa
Total Investment £64.00 Lifetime use £15+ recurring £100+ upfront £20+ monthly waste
£158

Annual food waste cost

£64.00

One-time LockNJar price

£79 OFF

Your UK Saving

Claim Your 50% Saving
UK Testimonials

Trusted by 12,000+ UK users

4.9

out of 5 stars

5★
91%
4★
8%
3★
1%
2★
0%
1★
0%

4,120+

Verified UK Reviews

98%

Report Food Freshness

@james_w_ldn
@emma_manc_cook
@alistair_scot_prep
@sophie_bristol_vegan
@thomas_leeds_camping
@katie_birmingham_fresh
Verified UK Purchase

"I was about to spend a fortune on a massive vacuum sealer machine. LockNJar literally solved the problem in a tiny package. The -80 kPa tech really seems to preserve my jars much better than standard manual pumps!"

J

James W.

London, UK

Verified UK Purchase

"I use this for my berries and salads after a long week of work. It's so efficient I can buy in bulk, and I love that it's cordless. It's my favourite kitchen essential for my UK camping trips too."

E

Emma S.

Manchester, UK

Verified UK Purchase

"Best companion for meal prep recovery. No more throwing out half-used jars of pasta sauce. The portable design is brilliant as I can just keep it in my kitchen drawer for targeted relief from food waste straight after cooking."

A

Alistair G.

Edinburgh, UK

-80 kPa

Suction Power

488

Tool Weight (g)

2000mAh

Battery Capacity

4.9

UK Rating

30-Day Waste-Free Kitchen Guarantee

Try LockNJar in your own home completely risk-free. If you don't find it effectively eases your food storage frustrations or if you aren't satisfied within 30 days, simply contact our UK-based support team for a full refund. We are committed to your daily kitchen convenience.

Full UK Refund
Local Customer Care
Easy UK Returns
Assurance

Food Preservation Commonly Asked

Ready for a waste-free kitchen?

Join thousands of UK home cooks who have reclaimed their cupboard space and budget. Stop suffering from food waste and start preserving your groceries naturally today.

Get 50% Off — Order LockNJar
Free UK Tracked Delivery
30-Day Money Back
Cordless Convenience