3M 5200 fast cure
Anyone know what the shelf life is after opening the small tube? The bigger gun tube needs to be used fairly soon in my experience. Great stuff.
Forum Discussion
3M recommends a 3 oz tube of 3M 4000UV be used within 24 hours of opening. I've found it stays somewhat pliable for almost a week as long as you seal it tightly. 5200FC cures in similar time as 4000. Standard 5200 takes much longer. FWIW (in terms of RV use), 4000 is much more UV resistant than 5200.
