حلقات O من مطاط بونا-إن نتريل 0.139 بوصة CS × 0.671 بوصة ID | AS568-209 | داش 209 | صلابة 90 (600 / عبوة)

Ordered these for a batch of hydraulic fittings and the 90 durometer hardness is spot on—they seat firmly without squishing out under pressure. The -40°F to 250°F range covers what I need for outdoor equipment in winter. 600 in a pack means I won't be reordering for a while, which is exactly what I

Had to replace a batch of old seals in a hydraulic press, and these 90-durometer rings fit perfectly without any tweaking. The temperature range is exactly what I needed for high-heat applications.

Finally found o-rings that actually hold up in my hydraulic setup; the 90 durometer makes them noticeably firmer than the standard ones I've tried. The 600-count pack will last me through multiple rebuilds, and the 0.671" inner diameter fit perfectly on the shaft.