Try chrono24.com search for Oris then accessories. Oris Divers Sixty Five £232 https://www.chrono24.co.uk/oris/braceletstrap-diving-divers-sixty-five-edelstahlband-21mm-07-8-21-18--id8436058.htm?SETLANG=en_GB&SETCURR=GBP
Not a bracelet but these look quite good as a waterproof alternative, in the hard to find 21mm lug width, to the leather strap @£28 - https://www.watchgecko.com/zuludiver-quick-release-sailcloth-padded-divers-watch-strap Review shown on a sixty five - http://strapsense.com/2019/09/27/watch-gecko-zuludiver-quick-release-sailcloth-rally-strap/
I managed to pick this up for £950 a few months back, lovely watch. Was thinking of picking up the metal link bracelet at some point, it’s around £200 direct from Oris, can’t seem to find a reseller or similar anywhere else.
Got one. Love it.... would always buy a watch on a Stainless strap....
I wouldnt suggest risking this watch for diving when it is only rated at 100 metres. Probably safe to wear when washing your hands in a sink!