If it's an old fashioned chain, it doesn't have O-rings or x-rings. The o-ring chain lasts longer, and the X-Ring chain lasts even longer than that. I like the brand Niche because they are inexpensive and they are X-Ring chains, and I usually get about 15,000 without doing any maintenance whatsoever, or about 20K to 25K if I do the proper maintenance.
It's also been recommended by some of us old timers to let it soak in gear lube overnight before installation.
It's also been recommended by some of us old timers to let it soak in gear lube overnight before installation.