The Freudenberg-NOK Industrial Services Dichtomatik O-Ring, with a 2.725" inner diameter and a 0.210" cross-section, is crafted from 90 durometer NBR (Nitrile Butadiene Rubber). This O-Ring is engineered for effective sealing in various applications, especially where exposure to oils and chemicals is a concern. The durable NBR material provides excellent resistance and longevity, ensuring compliance with industry standards. This O-Ring is an ideal choice for automotive and industrial applications, delivering a reliable seal that enhances operational efficiency.