Aerospace series. Ethylene-propylene elastomer (EPM/EPDM). Hardness 80 IRHD for static seal elements in hydraulic systems for long-term application. Material standard|Static seals, Quality assurance systems, Cables (electric), Environmental testing, Compression set, Qualification approval, Nickel alloys, Tear tests, Elastomers, Temperature, Designations, Hardness, Corrosion tests, Steels, Alloys, Hardness testing, Melting, Aircraft components, Testing, Density, Non-ferrous alloys, Air transport engineering, Approval testing, Synthetic rubber, Sleeving (electrical), Elongation, Measurement, Test specimens, Contrast (optical), Surfaces, Aerospace transport, Air, Natural rubber, Surface treatment, Mixing, Test methods, Electrodes, Cable ties, Diameter, Launching facilities (aerospace), Testing methods, Volume, Dimensions, Elastic constants, Ethylene-propylene rubber, Electrical measurement, Circuit-breakers, Shape, Durability, Quality assurance, Tensile strength, Treatment