SEALING COMPOSITION Russian patent published in 2003 - IPC

FIELD: sealing materials. SUBSTANCE: invention relates to sealing composition, more particularly vacuum filling, intended to provide tightness for vacuum and vacuum-autoclave formation of products from polymer composites and metals at 125-180 C. Composition contains, wt parts: butyl rubber 100, isoprene rubber 25-35, colophony 10-20, polybutene 105-115, chalk 140-160, carbon white 25-35, zinc oxide 4-6, and stearic acid 2-4. EFFECT: ensured tightness, stability, and reliability of formation processes up to 180 C and simplified final demounting of abutting surfaces. 2 tbl