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James Walker® Gaskets & Jointings > Cork-elastomer jointings

  Cork-elastomer jointings
Nebar® White: Premium Neoprene Electrical
Premium quality cork-elastomer jointing, based predominantly on polychloroprene. Proven over many years in heavy electrical plant. Previously designated Nebar® N6/25.

• Top grade product for transformers and switchgear.
• Developed for prolonged contact with mineral oils.
• 105°C maximum operating temperature in liquids.
• Retains flexibility down to –35°C.
Complies with ASTM F104 line call out F225000M2.
PHYSICAL PROPERTIES (Tested to ASTM F104 procedures)
Hardness, IRHD 65 to 85 (ASTM D1415)
Tensile strength, MPa min 1.75 (ASTM F152)
Compressibility @ 2.8N/mm2, % 20 to 30 (ASTM F36)
Recovery, minimum % 80 (ASTM F36)
Fluid resistance, % volume swells in:
ASTM oil 1, 72h @ 100°C –5 to +10 (ASTM F146)
IRM903, 72h @ 100°C +5 to +30 (ASTM F146)
Fuel A, 22h @ ambient 0 to +15 (ASTM F146)
BS148 Transformer Oil, 14 days @ 90°C +10 (ASTM F146)
Precision cut gaskets to any shape, size and quantity. In sheets 1.2m x 1.2m.
Thicknesses 0.75mm, 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 6.4mm, 8mm, 9.5mm.