Unformed bowl oring install....all of a 2 minute procedure. Metric sized nitrile orings used in my kits, perfectly sized, seal fine, will offer a long service life. PS common swelling is not an issue....no complaints since switching to these about a year ago.
photo 1 shows a few tiny drops of cyano in the lands (NOT slopped in the bowls), press for a few seconds, work all way around, you're done
TIA for containing the compulsion to criticize the discolored donor bowl innards, these are junk, just using for the photo op, will never see actual service.
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