• 12 Dozen (144) Quality Reliable Products BPA-free Food Grade Clear Reusable Silicone Seals for use with food products only and are GUARANTEED airtight and leak-proof with any brand Mason jar plastic caps (we cannot guarantee a good fit for any other use including Fido glass storage containers)
  • REGULAR MOUTH are 1.5mm thick with a 2 3/4" (70 mm) outer diameter and a 2 3/8" (60 mm) inner diameter. 
  • WIDE MOUTH are 2mm thick with a 3 3/8" (86 mm) outer diameter and 3" (76 mm) inner diameter. 
  • QRP Seals are wide enough that they provide an airtight fit snug underneath the lid threads, and do not fall out while placing the lid on the jar. THESE ARE THE BEST SEALS FOR ANY BRAND MASON JAR PLASTIC LIDS ON THE MARKET GUARANTEED!
  • Easy removal for easy clean
  • Clear silicone aids in cleaning inspection
  • Includes 144 seals only; lids not included
  • NOT FOR ONLINE RESALE THROUGH AMAZON OR EBAY.  ALL QRP ADVERTISING IS COPYRIGHT PROTECTED!

Without some form of gasket, Mason jar plastic lids are not airtight. Quality Reliable Products Mason Jar Silicone Seals fit snug into any brand Mason jar plastic lids.  We tried the narrower red rubber seals with the smaller outer diameter.  They tend to become displaced while tightening the lid, and unfortunately, they did not keep our fermentation jars airtight - see photo.  Our reliable seals provide a perfect airtight, anaerobic enclosure while fermenting Kimchi (vegetables) or Kombucha (tea).  We ferment on a very large scale, and our Seals do resolve the airtight issue.  When testing our Seals by placing water in a jar and shaking the jar, we experience no leaks.

These seals are made wide enough that they will seat against the roof of the cap completely underneath the grooves of the cap and  cannot fall out while putting the lid on the jar.  OVERTIGHTENING COULD DAMAGE THE SEAL AND MAKE IT DIFFICULT TO REMOVE THE CAP! 

Metal vs. Plastic Lids use for fermentation and storage of fermented foods?  We find that whatever we are fermenting does not normally come in contact with the lid during fermentation, but however, may briefly come in contact with the lid during storage.  We've done the research, which reveals that metal shouldn't be used during fermentation, nor for storage of fermented foods.

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Guide for Turning a Mason Jar into a Food Fermentation Vessel

 

LINKS TO RELATED PRODUCTS:
 
 

3-Piece Fermentation Airlock, Acrylic

6 each 3-Piece Fermentation Airlocks, Acrylic

12 each 3-Piece Fermentation Airlocks, Acrylic

1 each Mason Jar Drinking/Fermentation Lid Cap Food Grade Grommet, Seal, Stopper

6 Mason Jar Drinking / Fermentation Lids Caps Food Grade Grommets, Seals, Stoppers

12 FERMENTATION CAPS Installed Food Grade Silicone Grommets, Seals, and Stoppers

STARTER KIT Mason Jar FERMENTATION LID w/installed Grommet Seal Stopper Airlock

BEGINNER FERMENTATION KIT 6 Mason Jar Lids Seals Grommets Stoppers & 2 Airlocks

6 Mason Jar FERMENTATION LIDS w/ Installed Grommets, Seals, Stoppers, & Airlocks

 

 

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BONUS: A FREE GIFT of an "Our Daily Bread" Christian daily devotional is included with each order. If you aren't interested in receiving the booklet, kindly send a message when placing your order and request that we withhold the gift. Thanks for your consideration! A FREE GIFT of an "Our Daily Bread" Christian daily devotional is included with each order. If you aren't interested in receiving the booklet, simply send a message when placing your order and request that we withhold the gift. Thanks for your consideration!

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God bless you and THANKS FOR SUPPORTING WORLD ORPHANS THROUGH SHINE IN THE DARK COMMISSION, A MEMPHIS INNER-CITY 501c3 CHARITABLE MINISTRY!