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James Walker® Gaskets & Jointings > Cork-elastomer jointings



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

PRIME FEATURES
• 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.
 
SPECIFICATIONS
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)
 
HOW SUPPLIED
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.