Any experience using NOS tubes of tubular cement?
I just dug out a pair of Vittoria Mastik'One tubes I've been carrying in a file cabinet for the past 20-30 years. The sealed tubes feel as good as new from my withered memory. Is there a shelf-life for this stuff? Thinking of buying some new sew-ups and using an old wheel set from the garage, no racing, intended use simply low mileage fitness riding for starters. Of course i have no problem buying new tubes of cement and once i pop these i can check the condition but if there's an accepted shelf-life belief, please share.
thanks
eric
fresno, ca.