Originally Posted by Justus
Yeah, but the normal shelf-life of a buna-n o-ring is 5 to 15 years, depending on which industry standard report you look at.
Yeah, I'm thinking mine were a year or two old when I got them (at least). I also thought about the viton ones that are in a box of 50 and 75 duro, but it's the same problem. Does anyone ship with "born on" dates on their o-rings?