03-15-2011 07:35 AM - last edited on 05-29-2014 08:31 AM by MSWOODcraft
A few years ago, Wood Magazine had an article about Glue Expiration Dates which I have used everytime I purchase Glue. Yesterday, I was in a store and looked at the Titebond Glues. The 6 digit expiration date which started with a number (Year) and then a letter (Month) was replaced new longer digit number which began with a letter. I did not count the number of digits, but guess there were 8 to 10. Does anyone know how to interpret this new number to get the expiration date?
Thank you, Dean
03-15-2011 01:43 PM
Copied from another forum site:
The first digit represents A for America (made in), the second digit is the last digit of the year of manufacture, the third and fourth digits
represent the month, the fifth and sixth digits represent the day of the month and the last four digits represent the lot number.
A904270023 – This material was manufactured on April 27, 2009"
03-15-2011 01:48 PM
Way back when before they used to date stamp glues, we would check the plastic container's manufacturing date stamp, figuring it was within a month or so of that date.
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03-15-2011 02:13 PM
Here is a link to the original Wood Magazine question and answer.
03-23-2011 12:40 PM - edited 03-25-2011 10:44 AM
This topic comes up so often that I've now moved it to the Info Sharing board and floated it to the top. It's the easiest way to keep tabs on it and refer to it in the future.
Wood Online Moderator
03-25-2011 11:07 AM
Glues, like polyurethanes, have an enemy .... oxygen. Introduced into their environment, their life shortens. Factor in temperature extremes (especially stay away from freezing temps), contaminants, and the number of times they get opened too.
This is mentioned because the expiration date is not the "be all and end all" of glue performance.
03-25-2011 05:17 PM - edited 03-25-2011 07:39 PM
They're not 'expiration dates', but rather 'manufacture dates'.
It's up to you to determine when time is 'time' (although we've talked about a year being about the outer limits in a lot of cases).
Being able to decipher the manufacture date gives you a leg up in being able to make the call.
Wood Online Moderator
03-26-2011 06:37 AM
I keep my glue in the Wine Cellar attached to the shop. I feel comfortable with 2 years from date of mnft. for yellow glues stored this way.
But just remember that sniffing glue and drinking wine is a no-no.