Ключевые слова:
Aircraft components, Toroidal sealing rings, Sealing rings, Seals, Synthetic rubber, Fluorocarbons, Elastomers, Compression set, Hardness, Quality control, Qualification approval, Approval testing, Inspection, Acceptance (approval), Ageing (materials), Heat ageing tests, Density, Chemical-resistance tests, Sampling methods, Packaging, Marking