Vacuum accessory · LAVA
Product code 6Z-VL0193LAVA Vacuum Cover for Wide-Mouth Mason Jars
A rigid vacuum bell for round twist-off jars and two-piece preserving jars.
Rated 4.5 out of 5,4.54 reviewsNot part of MIX & VALUE (bags and rolls only).
About the LAVA Vacuum Cover for Wide-Mouth Mason Jars
Vacuum cover for jars
For standard round jars
A rigid vacuum bell for the most common round jars: bulbous twist-off jars, such as cucumber, sauerkraut and beetroot jars, and two-piece aluminium preserving jars. It sits over the lid and pulls a strong vacuum with your LAVA sealer.
- Screw cap
- 8–9cm
- Largest lid
- 8.5cm
- Unbreakable
- ABS
- Included
- Hose
How to use
Five steps to a sealed jar
- 01
Connect the hose
From the cover to your LAVA sealer.
- 02
Container mode
Switch the sealer over.
- 03
Set the lid
On twist-off jars, turn the lid on until you just feel resistance.
- 04
Place the cover
Evenly over the jar lid.
- 05
Run the vacuum
At full vacuum, lift the cover off: the jar is sealed.
It needs a LAVA vacuum sealer with container mode; the cover doesn't seal on its own. For preserves, pickles, sauces and dry goods, and for home preserving, where a strong vacuum helps the seal set.
Compare
This cover or the Flex Jar-Sealer?
Vacuum cover for jars
Standard round jars
A rigid bell for lids up to 8.5cm across.
Flex Jar-Sealer
Mixed or larger jars
A flexible silicone bell for round, square, oval and conical jars up to 106mm: see the Flex Jar-Sealer.
Specifications
A rigid vacuum bell for round twist-off jars and two-piece preserving jars. Place it over the jar lid, run your LAVA vacuum sealer in container mode, and it draws the air out for an airtight seal that keeps preserves, pickles, and leftovers fresh much longer. Fits jars with an 8 to 9cm screw cap, up to 8.5cm lid diameter. Unbreakable ABS, with around 85cm of hose. Works with any LAVA vacuum sealer in container mode.
- Type
- Suction device / container attachment
- Material
- High-quality plastic
- Connection
- Hose connection to the LAVA vacuum sealer
- Used With
- LAVA vacuum containers, vacuum lids, preserving jars, bottle stoppers
- Function
- Draws air from containers and jars via the sealer
- Included With
- Every LAVA vacuum sealer (also sold separately as a spare)
- Brand
- LAVA
Goes well with
All accessories →
Common questions
What jars does it fit?
Bulbous twist-off jars and two-piece aluminium preserving jars with an 8 to 9cm screw cap, up to a maximum 8.5cm lid diameter. These are the most common round jar sizes. For other shapes or larger jars, see the Flex Jar-Sealer.
What do I need to use it?
Any LAVA vacuum sealer with a container mode. You connect the cover to the sealer with the included hose, then run the vacuum. The cover does not seal jars on its own; it needs the sealer to draw the air.
How is this different from the Flex Jar-Sealer?
This is a rigid bell sized for standard round twist-off and preserving jars up to 8.5cm lid diameter. The Flex Jar-Sealer is a flexible silicone bell that fits a wider range of jar shapes and sizes up to 106mm. Choose this cover for standard round jars; choose the Flex for mixed or larger jar shapes.
Can I use it for home preserving and canning?
Yes. Pulling a strong vacuum in the jar helps the seal set and extends shelf life, which makes it well suited to home preserving as well as everyday sealing of opened jars.
How much longer will food last?
Vacuum sealing a jar can extend shelf life by around 5 to 10 times compared to simply closing it, by removing the air that drives spoilage. Actual results depend on the food and storage conditions.
Reviews
What owners say
Showing 4 of 4 reviews
- ★★★★★
“Excellent quality yet to try it out”
Jason M.· Verified buyer· 11 Jan 2026
- ★★★★★
“Haven't used yet”
Bruce· Verified buyer· 20 Dec 2024
- ★★★★★
“LAVA were able to supply a product I had been searching for for quite some time, thanks!”
Theresa K.· Verified buyer· 09 Oct 2020
- ★★★★★
“Product is good quality and works well. Would recommend.”
Murray· Verified buyer· 17 Jul 2020