Colour Marking Rings are essential accessories for STAUFF Quick Release Couplings, specifically designed for Carbon Steel Flat-Face Screw-to-Connect Couplings in the Series FG. These rings provide a simple yet effective way to visually identify and differentiate between various couplings in industrial applications. Made from durable materials, the Colour Marking Rings ensure long-lasting performance and easy identification, enhancing safety and efficiency in fluid handling systems. By using these rings, users can quickly recognize the type and status of their couplings, reducing errors and improving workflow in demanding environments.