The Freudenberg-NOK O-Ring 4.000 x 0.125 (SKU 9251) is a high-quality sealing solution designed for various applications. Constructed from durable materials, this O-Ring offers excellent resistance to wear and environmental factors. With a cross-section of 0.125 inches, it fits securely in standard grooves, ensuring a reliable seal against fluids and gases. This O-Ring complies with industry standards, making it suitable for hydraulic and pneumatic systems. Its precise dimensions enhance compatibility with numerous applications, ensuring effective sealing.