[Nitrile Rubber] - Standard Nitrile Butadiene Rubber with a wide temperature range from -4℉ (-20°C) to 212℉ (100°C) Designed for use in a wide variety of sealing applications. NBR O-Ring Hardness: 70A Commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders. [Hardness] - 70A Durometer (Shore Hardness) for resistance to penetration NBR O-rings 70A Hardness Uxcell Nitrile Rubber O-Rings 20mm OD 10mm ID 5mm Width, Metric Sealing 20mm OD 10mm ID 5mm Width Metric Rubber Seals 70A Hardness Temperature: -4℉ (-20°C) to 212℉ (100 °C) [NOTE] - Please confirm the required size and material before purchase, and put it in the right place Circular Cross-Section They are circular, round in cross-section.
