The 4.00 MM CS X 42 MM ID F37522 O-RING FKM F37522 by Freudenberg-NOK is engineered for high-performance sealing in various applications. This O-ring features a cross-section of 4.00 mm and an inner diameter of 42 mm, making it suitable for hydraulic and pneumatic systems. Constructed from FKM material, it offers superior resistance to chemicals, heat, and aging, ensuring long-lasting reliability. The F37522 specification ensures compatibility with specific applications, making it a trusted choice for professionals in need of durable sealing solutions. This O-ring is essential for maintaining system efficiency and preventing leaks.