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James Walker® Gaskets & Jointings > Cork-elastomer jointings



  Cork-elastomer jointings
Nebar® Red: High Pressure
 
DESCRIPTION
Ahigh quality blend of cork and polychloroprene that withstands high pressures and high bolt loads, particularly in the electrical industry. Previously designated Nebar® HP.

PRIME FEATURES
• Developed for high pressure applications in switchgear and transformers.
• High resistance to mineral oils.
• Withstands higher bolt loadings than other Nebar grades.
• 110°C maximum operating temperature in liquids.
• Retains flexibility down to –35°C.
 
SPECIFICATIONS
Complies with DTD 900/4911; AFS 721; and ASTM F104 line call out F224000M2.
 
PHYSICAL PROPERTIES
(Tested to ASTM F104 procedures)
Hardness, IRHD 70 to 85 (ASTM D1415)
Tensile strength, MPa min 2.35 (ASTM F152)
Compressibility @ 2.8N/mm2, % 10 to 30 (ASTM F36)
Recovery, minimum % 75 (ASTM F36)
 
Fluid resistance, % volume swells in:
ASTM oil 1, 72h @ 100°C –5 to +5 (ASTM F146)
IRM903, 72h @ 100°C +10 to +30 (ASTM F146)
Fuel A, 22h @ ambient 0 to +10 (ASTM F146)
BS148 Transformer Oil, 14 days @ 90°C +10
 
HOW SUPPLIED
Precision cut gaskets to any shape, size and quantity. In sheets 1.2m x 1.0m for 0.75mm thickness; sheets 1.2m x 1.2m for thicknesses 1.5mm, 2.5mm, 3mm, 6mm, 6.4mm, 9.5mm, 22mm.