First order: Buy 2, Get 1 Free · Fits regular-mouth jars · 60-day guarantee
ROKUME
Day 1 · Day 5 · Day 10

Same berries. Same fridge. One jar sealed.

Day 1
Day 1: a jar sealed with ROKUME next to a jar with a normal lid
Day 5
Day 5: a jar sealed with ROKUME next to a jar with a normal lid
Day 10
Day 10: a jar sealed with ROKUME next to a jar with a normal lid

Illustration of the two-jar test. Results vary with the food and your fridge.

ROKUME · Mason Jar Vacuum Sealer

Take the Air Out of Your Mason Jars With One Press — and Stop Throwing Out Food You Paid For

Air trapped under the lid is what spoils your food. One press pulls it out of the jars you already own. No bags. No hose.

  • ✓Keep Sunday’s shopping from turning into Thursday’s trash.
  • ✓Buy in bulk again without throwing half away.
  • ✓Fits the regular-mouth jars you already own.
Color: White
Choose your offer
3 SealersNow included in Buy 2, Get 1 Free €195
60-day guaranteeFree sealer added at checkoutArrives in 6–12 days
Try it for 60 days. We pay the return shipping.

Not right for your kitchen? Send it back for a full refund.

Questions people ask first

I already have a bag sealer with a jar attachment. Why would I need this?

Because you’d have to get it out. An attachment needs the machine, a hose and a plug, so it ends up in the cupboard. ROKUME is one cordless piece that lives on the counter.

Will it fit my jars?

Yes, if they’re regular-mouth mason jars, which covers most brands.

Do I need to buy special lids?

No. It comes with 10 stainless-steel lids, and there are no bags to buy.

Won’t this end up in a cupboard like my last gadget?

Your last one was probably just too much work. This is one button, and it stops on its own. If it doesn’t earn its spot, return it within 60 days.

Day 1 · Day 5 · Day 10

Same berries. Same fridge. One jar sealed.

Day 1
Day 1: a jar of fresh strawberries sealed with ROKUME next to a jar with a normal lid
Day 5
Day 5: the sealed strawberries next to the normal-lid jar
Day 10
Day 10: the sealed strawberries next to the normal-lid jar

Illustration of the two-jar test. Results vary with the food and your fridge.

Reviews

What people say after two weeks

4.8
★★★★★
Based on 786 reviews
5★
82%4★
12%3★
4%2★
1%1★
1%
★★★★★Sample review

Finally using my jars again

I had a cupboard full of mason jars doing nothing. Now my berries and spinach go in them the day I shop. One press and it stops on its own.

Linda M. · Ohio
★★★★★Sample review

Small enough to leave out

My old bag sealer lived in the garage. This sits next to the coffee maker and I actually use it every day.

Carol T. · Texas
★★★★☆Sample review

Works well, lids are handy

Seals my regular-mouth jars fine and the steel lids feel sturdy. Took me a couple of tries to screw it on straight.

Dave R. · Oregon
★★★★★Sample review

Great for bulk buying

We buy nuts and coffee from Costco. Sealing them in jars keeps the pantry tidy and nothing goes stale on us.

Patricia K. · Florida
★★★★★Sample review

Did the 14-day check

Sealed a jar of strawberries and checked it two weeks later like the page said. Lid was still pulled down tight.

Susan W. · Michigan
★★★★☆Sample review

Good gift for my mom

She grows tomatoes and peppers every summer. She likes that there are no bags to buy. Wish it came in more colors.

Mark H. · Georgia
Before you buy

The three worries we hear most

The worry
“A cheap hand pump does the same thing.”
It can work, but you pump every jar by hand, every time. One press is what you’ll still be doing next year.
The worry
“Is it strong enough to really hold a seal?”
Many sealers stop on a timer, air out or not. ROKUME is the upgraded K-80S: it keeps pulling until the air is out, then stops.
The worry
“I don’t have time for another kitchen project.”
It isn’t one. Fill, lid, press once. It stops by itself.
Why we made it

Started on a farm that was tired of throwing food away

“Our farm grew more than we could sell or eat. Berries went fuzzy in days, and bag sealers took too long mid-harvest. So I set out to make sealing a jar as quick as closing it.”

Greg Villani, founder of ROKUME

How it works

Food doesn’t spoil on its own. Air does most of the damage.

1

Oxygen makes food stale

It browns cut apples, and makes nuts and coffee taste old.

2

Mold needs air to grow

The fuzz on berries and bread needs oxygen. Less air, less mold.

3

Ripening gas gets trapped

Fruit gives off a ripening gas. Under a lid, it speeds everything up.

Your fridge slows all three. It can’t stop them while the air is still in the jar.

How to use it

Three steps. One button.

A hand setting a flat metal lid on a mason jar of strawberries
1

Fill and close

Fill your jar and set a flat sealing lid on top.

A finger pressing the top of the white ROKUME sealer on a jar of strawberries
2

Screw on and press

Screw ROKUME onto the jar and press the button once.

3

It stops by itself

When the air is out, it shuts off. Unscrew. Done.

Who it’s for

Made for people who hate wasting food

It’s a great fit if you…

  • Buy in bulk or shop at warehouse clubs
  • Grow a garden or get a farm box
  • Meal prep for the week ahead
  • Store flour, rice, nuts or coffee in jars
  • Are tired of throwing out produce you paid for

It’s not meant for…

  • Replacing pressure canning
  • Keeping fresh or cooked food safe outside the fridge
  • Jars with chipped or cracked rims
Compare

Why not just use what’s already out there?

Only one works with your own jars, in one press, with nothing to plug in or keep buying.

What matters ROKUME Bag vacuum sealer Jar attachment for a bag sealer Manual hand pump
Uses the jars you already own✓Yes✕No✓Yes✓Yes
No bags to keep buying✓Yes✕No✓Yes✓Yes
No hose or base machine✓Yes✕No✕No✓Yes
One press, no pumping✓Yes✓Yes✓Yes✕No
Cordless✓Yes✕No✕No✓Yes
Open and reseal for free✓Yes✕No✓Yes✓Yes
Small enough to leave on the counter✓Yes✕No✕No✓Yes
In the box

Everything you need to start

What’s in the box

  • ROKUME vacuum sealer
  • USB-C charging cable
  • 10 stainless-steel sealing lids
  • Jars not included — use your own

Specs

Fits
Regular-mouth jars
Colors
White or black
Auto-stop
Stops when sealed
Display
LED, one-button start
Charging
USB-C, built-in battery
Power
5 W
Size
4 × 4 × 4 in (10.2 cm)
Weight
1.2 lb (540 g)
Model
K-80S (upgraded)
Warranty
60 days
More questions

Everything else you might want to know

Can I use it instead of canning?

No. It helps food stay fresh in the fridge, freezer or pantry, but it doesn’t make food safe at room temperature. Keep perishables cold.

Can sealed jars go in the freezer?

Yes. Leave some space at the top of the jar, because food expands as it freezes.

What foods work best?

Berries, cut vegetables, greens, nuts, coffee, flour, rice, crackers and meal prep.

Launch offer

Stop feeding the fire in your fridge.

Take the air out of the jars you already own, and keep the food you paid for.

Buy 2, Get 1 Free is for first orders only
  • ✓Fits regular-mouth mason jars
  • ✓10 stainless-steel lids included
  • ✓60 days to try it · we pay return shipping
Color: White
Choose your offer
3 SealersNow included in Buy 2, Get 1 Free €195
60-day guaranteeFree sealer added at checkoutArrives in 6–12 days
Get ROKUME