حلقات O-Ring من بونا-إن نيتريل | 0.21" CS × 0.787" ID | AS568-315 | داش 315 | صلابة 90 (300/عبوة)

The 90 durometer hardness is exactly what I needed for a high-pressure seal, and the 0.787" inner diameter fit my shaft perfectly. 300 pieces in the bag means I've got plenty of spares for the whole project, and they're holding up great so far.

I’ve been using these 90 durometer o-rings for a hydraulic repair, and the -40°F rating gives me confidence in cold weather operation. The 300-count pack means I have plenty for future projects, and the inner diameter measured exactly 0.787" on my calipers.

The 90 durometer feels noticeably firmer than standard O-rings, which is exactly what I needed for a high-pressure seal. It took me about 20 minutes to install all 300 on a manifold assembly.