حلقات O من بونا-إن نتريل | AS568-460 | داش 460 | صلابة 70 | أسود (10/عبوة)

I needed o-rings for a hydraulic setup in a cold storage room, and these Buna-N ones have held up fine through the -10°F cycles without cracking. The 70 durometer feels just right for the seal.

Used the dash 460 size to rebuild a small pneumatic cylinder that kept leaking air, and the -40°F to +250°F range is exactly what I needed for my outdoor setup. They seated firmly without any stretch or tear during install.

The 70 durometer hardness gives these a nice firm feel that seals well without needing excessive force to compress. I’ve used them in a hot water line running about 200°F and they’ve held up perfectly over the past month with no leaks or swelling. Comes with ten in the pack, which is plenty for a fe