The Dichtomatik OR 0.275" 90 HNBR H901B by Freudenberg-NOK is engineered for superior sealing performance in demanding applications. This O-ring, with a diameter of 0.275 inches and a hardness rating of 90 on the Shore A scale, is crafted from HNBR material, known for its excellent resistance to oils, heat, and various chemicals. It is suitable for use in hydraulic and pneumatic systems, ensuring a reliable seal under pressure. The O-ring's precise dimensions and high-quality construction meet stringent industry standards, making it a dependable choice for engineers and maintenance professionals.