Loctite shelf life

[david newman 9Participant @davidnewman9]

I am told that loctite has a limited shelf life ??? I today used Loctite 648 adhesive to secure a shaft into a crank (Stuart engine) I have had this Loctite for about 30 years and it has worked just fine the crank is immovable on the shaft after about 2 hours. Is there really a shelf life on this adhesive ?. David

[david newman 9Participant @davidnewman9]

I am told that loctite has a limited shelf life ??? I today used Loctite 648 adhesive to secure a shaft into a crank (Stuart engine) I have had this Loctite for about 30 years and it has worked just fine the crank is immovable on the shaft after about 2 hours. Is there really a shelf life on this adhesive ?. David

[david newman 9Participant @davidnewman9]

[Peter G. ShawParticipant @peterg-shaw75338]

I've wondered about this as well. Also with other glues. I had some Milliput which at 14 years old still worked ok even though it was well past it's use by date.

I do wonder if these dates are all to do with manufacturers protecting themselves. For example, I had some paracetamol tablets which I discovered were about to exceed their "do not use after" date. Unfortunately, this was approaching New Year and I could not get anymore, so I reasoned that it was very unlikely that they would suddenly become unusable immediately after this date and so I used them, until I could get replacements.

On the other hand, I did have some medical cream which was a few months past its use by date, and when used, made the situation worse.

Perhaps it's a case of all these dates are the minimum expected life of these items, and any use thereafter is at the users own risk as they may, or may not, work.

Regards,

Peter G. Shaw

[Peter G. ShawParticipant @peterg-shaw75338]

I've wondered about this as well. Also with other glues. I had some Milliput which at 14 years old still worked ok even though it was well past it's use by date.

I do wonder if these dates are all to do with manufacturers protecting themselves. For example, I had some paracetamol tablets which I discovered were about to exceed their "do not use after" date. Unfortunately, this was approaching New Year and I could not get anymore, so I reasoned that it was very unlikely that they would suddenly become unusable immediately after this date and so I used them, until I could get replacements.

On the other hand, I did have some medical cream which was a few months past its use by date, and when used, made the situation worse.

Perhaps it's a case of all these dates are the minimum expected life of these items, and any use thereafter is at the users own risk as they may, or may not, work.

Regards,

Peter G. Shaw

[roy entwistleParticipant @royentwistle24699]

I have some Locktite 601 which must be 25 years old it still works

Roy

[roy entwistleParticipant @royentwistle24699]

I have some Locktite 601 which must be 25 years old it still works

Roy

[mike TParticipant @miket56243]

I am sure that loctite shelf life is an invention of Quality Control engineers and the manufactures. The only good thing about shelf life is that it can provide a ready source of free loctite if you are in the right place at the right time. One of my bottles of 648 is about 20 years old and will still create immovable bonded joints.

[mike TParticipant @miket56243]

I am sure that loctite shelf life is an invention of Quality Control engineers and the manufactures. The only good thing about shelf life is that it can provide a ready source of free loctite if you are in the right place at the right time. One of my bottles of 648 is about 20 years old and will still create immovable bonded joints.

[Nicholas FarrParticipant @nicholasfarr14254]

Hi, I'm not aware of any shelf life of the anaerobic liquids as I have some of them and have used the at work for many years and they have always worked OK. There is no mention of a shelf life on thier data sheets that I've looked at, which can be found at this **LINK**

Peter, I believe at lot of tablets and the like just become less efective to the point that they do nothing at all after the use by date, they apparently woun't do you any harm, but if you are unsure, it is best not to take them.

Regards Nick.

[Nicholas FarrParticipant @nicholasfarr14254]

Hi, I'm not aware of any shelf life of the anaerobic liquids as I have some of them and have used the at work for many years and they have always worked OK. There is no mention of a shelf life on thier data sheets that I've looked at, which can be found at this **LINK**

Peter, I believe at lot of tablets and the like just become less efective to the point that they do nothing at all after the use by date, they apparently woun't do you any harm, but if you are unsure, it is best not to take them.

Regards Nick.

[John Stevenson 1Participant @johnstevenson1]

One of the biggest users of Loctite is the military so if you can convince them that it only has a years shelf life you are guaranteed a job for life.

[John Stevenson 1Participant @johnstevenson1]

One of the biggest users of Loctite is the military so if you can convince them that it only has a years shelf life you are guaranteed a job for life.

[Tony Pratt 1Participant @tonypratt1]

We use all types of loctites, sealers, adhesive and tapes where I work and every single one has a use by date. We are not allowed to use anything out of date.

Tony

[Tony Pratt 1Participant @tonypratt1]

We use all types of loctites, sealers, adhesive and tapes where I work and every single one has a use by date. We are not allowed to use anything out of date.

Tony

[Michael GilliganParticipant @michaelgilligan61133]

Oh well … here goes my 1,000th Post … might as well use it for a reasonably definitive statement.

About 25 years ago, when working at BAE in Stevenage, all Loctite drawn from our stores carried a Shelf Life label. … Having an urgent need to use some 638, I found that the bottle in our Lab was out of date.

I telephoned Loctite at Hemel Hempstead, to ask if it was safe to use.

The reply was that these products work simply by changing from liquid to solid, so … if it's still liquid it's still good to use. If it's already solid, its already "used".

Loctite did not acknowledge the concept of a Shelf Life for Anaerobic Adhesives.

That's really all there is to it.

MichaelG.

[Michael GilliganParticipant @michaelgilligan61133]

Oh well … here goes my 1,000th Post … might as well use it for a reasonably definitive statement.

About 25 years ago, when working at BAE in Stevenage, all Loctite drawn from our stores carried a Shelf Life label. … Having an urgent need to use some 638, I found that the bottle in our Lab was out of date.

I telephoned Loctite at Hemel Hempstead, to ask if it was safe to use.

The reply was that these products work simply by changing from liquid to solid, so … if it's still liquid it's still good to use. If it's already solid, its already "used".

Loctite did not acknowledge the concept of a Shelf Life for Anaerobic Adhesives.

That's really all there is to it.

MichaelG.

[nigel jones 5Participant @nigeljones5]

Chaps, it most certainly does have a shelf life – as QA director to a large usa corperation I can assure you that we have tested the oem claims – and they are substanciated. Thats not to say that your 25 year old bottle isnt still good, its just to say that it shouldnt be! As above, ita an anaerobic reaction so if its still liquid it should be ok….but I wouldnt use it !!

[nigel jones 5Participant @nigeljones5]

Chaps, it most certainly does have a shelf life – as QA director to a large usa corperation I can assure you that we have tested the oem claims – and they are substanciated. Thats not to say that your 25 year old bottle isnt still good, its just to say that it shouldnt be! As above, ita an anaerobic reaction so if its still liquid it should be ok….but I wouldnt use it !!

[Douglas JohnstonParticipant @douglasjohnston98463]

Is loctite one of these products that are best stored in the fridge to extend shelf life?

Doug

[Douglas JohnstonParticipant @douglasjohnston98463]

Is loctite one of these products that are best stored in the fridge to extend shelf life?

Doug

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Doug, according to Loctite's data sheets their anaerobic liquids should be stored at an optimal temperature between 8 – 21 C. They should not be stored below 8 C or above 28 C as this can adversely affect product properties.

RRegards Nick.

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Doug, according to Loctite's data sheets their anaerobic liquids should be stored at an optimal temperature between 8 – 21 C. They should not be stored below 8 C or above 28 C as this can adversely affect product properties.

RRegards Nick.

[Gordon WParticipant @gordonw]

I've got some Loctite 641 and 326, both well over 25 yrs old and both still work well. Also thread lock still good. On the other hand I've bought new from a shop and the stuff is solid in the jar ! Get what you pay for I guess. 2 pack stuff seams to last forever . Low temp. is recomended , my stuff is all in cold damp shed.

[Gordon WParticipant @gordonw]

I've got some Loctite 641 and 326, both well over 25 yrs old and both still work well. Also thread lock still good. On the other hand I've bought new from a shop and the stuff is solid in the jar ! Get what you pay for I guess. 2 pack stuff seams to last forever . Low temp. is recomended , my stuff is all in cold damp shed.

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