Masterlock 6271 and Cobra Universal PUCK Cylinders

[clanderson]

Does anybody have any recommendations for replacement lock cylinders for these two locks?
Do they use a certain standard cylinder size/type that I should be looking for?

https://www.masterlock.com/business-use/product/6271

http://www.lsidepot.com/Padlocks/Cobra- ... k-p28.html

[billdeserthills]

American Padlock makes a replacement cylinder for their puck lock, but you'll need to buy them from a
locksmith or E-bay most likely
I'm not sure about your Ace keyway cylinder, I can't see enough of it in your pic