حلقات O-Ring بونا-ن نيتريل 0.139 بوصة CS × 1.109 بوصة ID | AS568-216 | داش 216 | قابل للكشف معدني | صلابة 70 (65 / عبوة)

I've been using these for oil seal replacements in a hydraulic press, and the 70 durometer feels just right for the pressure. The cross-section is exactly 0.139" as specified, and they fit snugly without any leaks so far.

The metal-detectable feature is a huge relief for our food processing line—those tiny fragments finally show up on the scanner if something goes wrong. Fit the grooves perfectly on the first try, and the 70 durometer feels solid without being too stiff.

Finally, o-rings that actually hold up against hydraulic fluid without swelling up after a week. The metal detectable feature gives me peace of mind during food processing inspections, and at 65 per pack, it's a solid deal for the quality.