4.8Â rating based on total orders
In stock and ready to ship
GUARANTEED SAFE CHECKOUT
LockNJar Mason Jar Vacuum Sealer
PE Bag
Data Cable
Color Box
Bottle Opener
User Manual
Our top-rated customer service team is available seven days a week to address your questions via email or live chat. Simply reach out to us, and we’ll gladly assist you.
Frequently Asked Questions
The LockNJar extends food freshness up to 5 times longer than traditional storage by removing 99% of air. Fruits, vegetables, and dry goods stay fresh for weeks instead of days.
Yes, the LockNJar works with all standard mason jar brands including Ball, Kerr, and generic jars in both regular-mouth (2.75 inches) and wide-mouth (3.4 inches) sizes perfectly.
The 2000 mAh battery seals approximately 30-50 jars per charge depending on jar size. Most users charge once every 2-3 weeks with regular daily use and proper maintenance.
Absolutely not. Simply place the LockNJar on your jar lid and press the button. The automatic stop feature handles everything else, making it foolproof for first-time users.
The LockNJar operates at under 60 dB, quieter than normal conversation or background music. You can preserve food early morning or late evening without disturbing anyone in your home.
The LockNJar works best with dry and semi-dry foods. For liquids, leave adequate headspace (1-2 inches) to prevent liquid from entering the vacuum mechanism during the sealing process.
The LockNJar automatically stops when optimal vacuum pressure is reached. The LED indicator changes color and the motor stops, signaling your jar is perfectly sealed and ready for storage.
At -80 kPa, the LockNJar provides 100% stronger suction than typical -40 kPa models, creating superior airtight seals that preserve food longer and prevent oxidation more effectively than competitors.