Originally Posted by
eja_ bottecchia
I believe that KMC recommends against re-use of their Missing Link.
(As soon as I post this there will be others posting how they have re-used the Missing Link, over and over, without a problem
IIRC, KMC doesn't recommend against the reuse of their link on a given chain but that when you replace the chain you should use the new link that came with it.
SRAM, for reasons never explained but possibly a patent issue, does recommend against the reuse of their 10-speed master link even on the chain it accompanied.