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Shelf life for primer and hardener? #1080382 09/22/11 01:01 PM 09/22/11 01:01 PM
Joined: Jul 2005 Posts: 283 U.S. B basik OP enthusiast
basik OP enthusiast B Joined: Jul 2005 Posts: 283 U.S.	I have some high build primer and the hardener that's been in my garage for about 3 years now. Is there a shelf life for this? Someone told me once that the hardener could go bad.

Re: Shelf life for primer and hardener? [Re: basik] #1080383 09/22/11 06:46 PM 09/22/11 06:46 PM
Joined: Sep 2007 Posts: 641 western australia 1 1cuda mopar
1cuda mopar 1 Joined: Sep 2007 Posts: 641 western australia	if the primer has never been opened-it should be fine but i wouldn`t risk it on exterior paint work as a primer-the hardener-no way-get fresh stuff even if it`s unopened- my cousin is a painter and this i know. all the best frank

Re: Shelf life for primer and hardener? [Re: 1cuda] #1080384 09/22/11 06:55 PM 09/22/11 06:55 PM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	I had a pint of hardener. was very careful to never let it mix with the clear --i.e. splashing while pouring it. it sat on the shelf for 6 months. went to use it again and it was hard as a rock. apparently hardener will harden all by itself! Photobucket sucks

Re: Shelf life for primer and hardener? [Re: 70Cuda383] #1080385 09/22/11 07:03 PM 09/22/11 07:03 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: I had a pint of hardener. was very careful to never let it mix with the clear --i.e. splashing while pouring it. it sat on the shelf for 6 months. went to use it again and it was hard as a rock. apparently hardener will harden all by itself! As soon as you crack the seal it's life is very limited but if the seal is unbroken if will last for years... "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: Shelf life for primer and hardener? [Re: 1_WILD_RT] #1080386 09/22/11 08:43 PM 09/22/11 08:43 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Quote: I had a pint of hardener. was very careful to never let it mix with the clear --i.e. splashing while pouring it. it sat on the shelf for 6 months. went to use it again and it was hard as a rock. apparently hardener will harden all by itself! As soon as you crack the seal it's life is very limited but if the seal is unbroken if will last for years... Yup, I use either Marhyde or Dupont urathane harder in acyrlic enamel and it will last 1-2 months after it's opened. I also recently sprayed some lacquer that was 5+ years old, it seemed OK. I did truck wheels with some argent silver I had because I needed silver and kinda wanted to use it before it went bad. So it was still good at 5 years and this gallon had been opened. I think lacquer is easy to store? Now I also have some PPG K-36 primer with hardner that is also 5 years old and it has never been opened. Hopefully I'll be able to answer your question next year when I plan to use it. lol Lastly I also sprayed some Nason(Cheap junky Dupont) 2+ year old clear with the same age hardner and it came out fine. Both containers were open before. So yea my hardner/catalist for my clear lasted 2+ years.

Re: Shelf life for primer and hardener? [Re: Challenger 1] #1080387 09/22/11 08:58 PM 09/22/11 08:58 PM
Joined: Jan 2003 Posts: 3,160 L.I. N.Y. Hemi Street HemiGreg master
HemiGreg master Joined: Jan 2003 Posts: 3,160 L.I. N.Y. Hemi Street	any catlist system really should not ever go bad as long as its in reasonable temps. I had 5 gallons of dark green epoxy primer from my uncle which he used litterly in 1968 on his air base. and 2 years ago after some serious shaking up it worked like a charm and probably bullett proof. I dont want to tell you the chems that were in its make up or the car s would be a superfund site. depleated uranium oxide is one and mercury peclorate/benzene was the fixer. no we dont need no stinking respirators----LOL but to be honest the stuff was also to aid in anti radar reflection-the particles would randomize the reflected enemry radat, really no diff then the new composite stealth if you know the technology

Re: Shelf life for primer and hardener? [Re: HemiGreg] #1080388 09/22/11 09:29 PM 09/22/11 09:29 PM
Joined: Nov 2007 Posts: 21,822 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,822 Kirkland, Washington	Quote: any catlist system really should not ever go bad as long as its in reasonable temps. I had 5 gallons of dark green epoxy primer from my uncle which he used litterly in 1968 on his air base. and 2 years ago after some serious shaking up it worked like a charm and probably bullett proof. I dont want to tell you the chems that were in its make up or the car s would be a superfund site. depleated uranium oxide is one and mercury peclorate/benzene was the fixer. no we dont need no stinking respirators----LOL but to be honest the stuff was also to aid in anti radar reflection-the particles would randomize the reflected enemry radat, really no diff then the new composite stealth if you know the technology We need a pair of crack-pipe toasting smilies !

Re: Shelf life for primer and hardener? [Re: Pacnorthcuda] #1080389 09/22/11 10:07 PM 09/22/11 10:07 PM
Joined: Jan 2003 Posts: 3,160 L.I. N.Y. Hemi Street HemiGreg master
HemiGreg master Joined: Jan 2003 Posts: 3,160 L.I. N.Y. Hemi Street	lets hear your list all the colors and what elements have been used for their creation?????? Last edited by HemiGreg; 09/22/11 10:16 PM.

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