Although cement described as 'vulcanizing' results in a stronger bond between patch and tube, it is considerably more expensive
and IME over the past 23 yrs, such as the Slime illustrated above are more than adequate and in the central south an 8 oz can
is good for at least 5 yrs. I am on my 3d such can since the early '00s and it is still good. A splash of solvent every 3-4 yrs and
a good mix would rejuvenate but it is not necessary at $5/8oz at any Wm or auto parts store. The small tubes in repair kits
are good for less than 6 mo IME unopened and much less when punctured for use. Note: my Slime is stored in my garage which
floats up to !00F in the summer. Might last longer in the fridge but it lasts a long time anyway.
Last edited by sch; 05-28-21 at 07:18 AM.