The Kramp SY012681 is a genuine NBR (Nitrile Butadiene Rubber) O-ring, precisely engineered with an inner diameter of 144 mm and a thickness of 4 mm. It features a Shore A hardness of 70, ensuring reliable sealing performance across a wide temperature range from -30°C to +100°C. This black O-ring conforms to DIN 3771 standard, making it suitable for various agricultural, construction, and industrial machinery applications where a robust and durable seal is required.