حلقات O من بونا-ن نيتريل | CS 0.21" × ID 1.224" | AS568-322 | داش 322 | صلابة 90 (250/عبوة)

The 90 durometer feels noticeably firmer than standard o-rings, which is exactly what I needed for a high-pressure hydraulic fitting. I used a few as gaskets on a steam line running at about 220°F and they've held up without any swelling or cracking so far.

These 90-durometer o-rings fit perfectly in my hydraulic cylinder rebuild. For the price of a 250-pack, it's a no-brainer to have extras on hand.

Needed a batch of these for a rebuild and the 1.224" inner diameter fit the groove perfectly on the first try. The 90 durometer has some real stiffness to it and they seat without rolling. Pack of 250 means I won't be reordering for a long time.