حلقات O-Ring HNBR مقاس 0.139 بوصة CS × 0.921 بوصة ID | AS568-213 | داش 213 | صلابة 70 (50 / عبوة)

Installed these on a hydraulic cylinder repair I’ve been putting off, and the -40°F to 300°F temp range gives me confidence they’ll hold up in both winter and summer. The 0.139" cross-section fit the groove perfectly.

The 70 durometer feels just right for my hydraulic application—not too stiff, not too soft. I've used them in a continuous 250°F environment and they haven't hardened or cracked after a month of service.

These handled the heat cycling on my air compressor manifold without any sign of hardening or cracking. The fit was snug right out of the bag, exactly what I needed for that 0.921" ID groove.