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James Walker® Gaskets & Jointings > Cork-elastomer jointings



  Cork-elastomer jointings
Nebar® Brown: General Purpose
 
DESCRIPTION
General purpose, high quality cork elastomer jointing. Below 3mm thickness it comprises a predominately nitrile bonded cork; 3mm and above the cork is bonded with a polychloroprene/nitrile blend. Previously designated Nebar® N1.

PRIME FEATURES
• Extensively used in automotive, engineering and electrical industries.
• Suitable for a wide range of flanges.
• 110°C maximum operating temperature in liquids.
• Retains flexibility down to –20°C (<3mm) or –30°C (>= 3mm).
 
SPECIFICATIONS
Complies with ASEA 1169 5012E-204; and ASTM F104 line call out — <3mm, F224000M2; 3mm & >3mm, F225000M2.
 
PHYSICAL PROPERTIES
(Tested to ASTM F104 procedures) <3mm >3mm
Hardness, IRHD 65 to 80 65 to 85 (ASTM D1415)
Tensile strength, MPa min 1.75 1.75 (ASTM F152)
Compressibility @ 2.8N/mm2, % 15 to 25 20 to 30 (ASTM F36)
Recovery, minimum % 75 75 (ASTM F36)
 
Fluid resistance, % volume swells in:
ASTM oil 1, 72h @ 100°C –3 to +10 0 to +10 (ASTM F146)
IRM903, 72h @ 100°C 0 to +25 +5 to +30 (ASTM F146)
Fuel A, 22h @ ambient –5 to +10 0 to +15 (ASTM F146)
BS148 Transformer Oil, 14 days @ 90°C +23.1 +8 (ASTM F146)
 
HOW SUPPLIED
Precision cut gaskets to any shape, size and quantity. In sheets 1.2m x 1.2m for thicknesses 0.75mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 6.4mm. Sheets 0.9m x 9m for thicknesses 0.75mm, 1.5mm, 2mm, 3mm, 5mm.