Recipe Sifter

  • Start Here
    • Course
    • Main Ingredient
    • Cuisine
    • Preparation
    • Occasion
    • Diet
    • Nutrition

Select () or exclude () categories to narrow your recipe search.


As you select categories, the number of matching recipes will update.

Make some selections to begin narrowing your results.
  • Calories
  • Amount per serving
    1. Total Fat
    2. Saturated Fat
    3. Polyunsat. Fat
    4. Monounsat. Fat
    5. Trans Fat
  • Cholesterol
  • Sodium
  • Potassium
  • Total Carbohydrates
    1. Dietary Fiber
    2. Sugars
  • Protein
  • Vitamin A
  • Vitamin B6
  • Vitamin B12
  • Vitamin C
  • Calcium
  • Iron
  • Vitamin E
  • Magnesium
  • Alcohol
  • Caffeine
  • Find exactly what you're looking for with the web's most powerful recipe filtering tool.

    You are in: Home / Community Forums / Canning, Preserving and Dehydrating / what causes a false seal?
    Lost? Site Map

    what causes a false seal?

    Mon Dec 31, 2012 1:57 pm
    Newbie "Fry Cook" Poster
    I check my pressure canned jars once a week, mainly because I'm new to canning and I've probably read way too many online canning articles.

    Today as I was checking the jars, one of my canned oranges lid popped off easily. I then doubled checked all the other jars and with the exception of this jar, all the lids are sealed & show the concaved dimple in the lid. By the way, there is no mold/growth on the oranges or syrup in the jar.

    I allow all of my canned jars to sit for 24 hours after pressure canning, and check the seals before I wash & label them and take them to the basement (temperature is monitored between 59 - 61 degrees).

    Because of my over education of Botulism and a bit of OCD, I follow Ball's Blue Book directions for pressure canning diligently.

    Was this jar of canned oranges an example of a false seal? If so, what causes a false seal? If not, what did I do wrong?
    Mon Dec 31, 2012 4:20 pm
    Forum Host
    According to the Ball/Kerr company: Using current home canning jars, lids, bands, processing methods and times all help assure there is no seal failure or that unsealing does not occur. It is important to follow the manufacturer’s instructions when preparing jars, lids and bands for use. It is also important to examine the canner to be certain it is in good working condition. When home canning, always use an up-to-date, tested recipe from a reliable source.

    If seal failure or unsealing does happen, check the following points to determine if one of them is the cause:
    • Insufficient or incorrect processing;
    • Over-tightening the band before processing or re-adjustment of the band after processing;
    • Incorrect headspace;
    • Reusing lids;
    • Using commercial jars;
    • Not preparing lids for use according to manufacturer’s instructions;
    • Not removing air bubbles from the jar or cleaning the rim of the jar before applying the lid.
    Mon Dec 31, 2012 5:06 pm
    Newbie "Fry Cook" Poster
    Thank you for your reply. I 'think' I reused a lid from previous canning when I ran out of the new jars, lids & bands box while filling the orange sections. Lesson learned. I have to come up with a better organization for my used lids (keeping separate from the new complete jars.)

    And yes, I'm getting more feed back from this site than the other canning sites (New Years Eve, I guess icon_smile.gif so a big THANK you!!
    Wed Jan 02, 2013 12:30 pm Groupie
    I mark any used lid with a Sharpie to make sure I know it can't be processed again.
    Wed Jan 02, 2013 12:49 pm
    Forum Host
    That's a great idea, Z. icon_smile.gif
    Wed Jan 02, 2013 1:25 pm
    Newbie "Fry Cook" Poster
    Well great minds think alike icon_smile.gif My mom suggested same thing yesterday.

    Thank you for replying to my problem. I wish you a happy new year!
    E-mail me when someone replies to this
    Add this to My Favorite Topics
    Alert us of inappropriate posts

    Free Weekly Newsletter

    Get the latest recipes and tips delivered right to your inbox.

    Your e-mail is safe. Privacy Policy

    Ideas from

    Powered by phpBB 2.0.1 © 2002 phpBB Group

    Over 475,000 Recipes Network of Sites