حلقات O من بونا-نايتريل | CS 0.139" × ID 6.359" | AS568-261 | داش 261 | قابل للكشف معدنيًا | صلابة 70 (11/عبوة)

The -40°F rating is a lifesaver for my outdoor hydraulic repairs in winter—they seal perfectly even when it's freezing. I've tested them up to 250°F on a hot compressor line with no issues, and the 70 durometer gives just enough flex without being too soft.

The metal detectable feature gives me peace of mind on our food processing line, and the 70 durometer is firm enough to hold pressure without being too stiff. I've already used three of these o-rings on different flanges, and all sealed perfectly on the first try.

Finally found oversized o-rings that actually fit my industrial vacuum pump; the 70 durometer feels just right for a snug seal. Tested them down to -30°F in my cold storage setup and they held perfectly with zero leaks.