本采购规范涵盖了具有“C”形横截面以形成密封圈的飞机质量金属垫圈，该密封圈由耐腐蚀和耐热的可时效硬化镍基合金制成，该合金的类型在统一麻木系统N07750中确定。主要用于密封流体的航空航天推进系统应用，其中工作温度不包括弹性O形密封圈的使用，并且应用相对不受轴向循环变形的影响，例如螺栓连接面型密封接头。

This procurement specification covers aircraft quality metallic gaskets having a "C" shape cross-section to form a seal ring, made from a corrosion and heat resistant age hardenable nickel base alloy of the type identified under the Unified Numbing System as N07750. Primarily for aerospace propulsion system applications for sealing fluids where operating temperatures excludes the use of elastomeric O-ring seals, and where the applications are relatively free from axial cyclic deflection, such as a bolted face type seal joint.