Economical, high quality cork-elastomer jointing based on a polychloroprene/nitrile/SBR blend. Previously designated Nebar® N7E. Prime features Recommended for switchgear and transformers. +110°C maximum operating temperature in liquids. Retains flexibility down to -30°C. Specifications Complies with ASTM F104 line call out F225000M2. Fluid compatibilities Suitable for use with air, water, alcohols, fuel and diesel oils, mineral lubricating oils, mineral hydraulic fluids, water/glycol, ASTM Oil No 1, IRM903 oil, ASTM Fuel A, BS 148 Transformer Oil. Physical properties (Tested to ASTM F104 procedures) Hardness, IRHD: 60 to 70 (ASTM D1415) Tensile strength, MPa minimum: 1.45 (ASTM F152B) Compressibility @ 2.8N/mm², %: 20 to 35 (ASTM F36B) Recovery, minimum %: 75 (ASTM F36B) Fluid resistance, % volume change in: ASTM Oil No 1, 72h @ 100°C: -5 to +10 (ASTM F146) IRM903, 72h @ 100°C: 0 to +30 (ASTM F146) ASTM Fuel A, 22h @ ambient: 0 to +15 (ASTM F146) BS 148 Transformer Oil, 14 days @ 90°C: +5 to +15 (ASTM F146)