حلقات O من مطاط بونا-إن نيتريل 0.21 بوصة CS × 0.912 بوصة ID | AS568-317 | داش 317 | صلابة 90 (300 / عبوة)

The 90 durometer feels noticeably stiffer than standard o-rings, so these should hold up well in a high-pressure hydraulic application. They fit perfectly on a 7/8" shaft and the batch of 300 is great value for the price.

I needed a batch for an oil seal repair and the 90-durometer hardness works perfectly. They seat nicely in the groove and show no signs of swelling after a week of use.

These 90-durometer rings feel noticeably firmer than the standard ones I've used before, which is perfect for the higher-pressure seal I needed. They slipped into the groove cleanly and haven't leaked a drop since installation.