Not really. I use Singer oil for the O-rings, sometimes use cheapo chain lube, sometimes spray on grease, sometimes EO.
When too much gunk stuck to it, then use kerosine or WD40 to wash nicely, dry and lube back. As long as don't leave the water causing rust would be fine, because if u can see rust develop outside, the inner links also will rust and shorten life span.

buy from lazada pasang sendiri.