FIELD: technological processes.
SUBSTANCE: invention relates to the rubber industry, in particular to the production of rubber compounds used for the manufacture of oil-swelling sealing elements used in the oil and gas industry. Rubber mixture contains butadiene-nitrile rubber containing 17–20 % acrylic acid nitrile, isoprene rubber SKI-3, ultrathene 11808-340, N,N'-dithiodimorpholine, thiuram D, sulfenamide C, zinc white, stearic acid, N-nitrosodiphenylamine, technical carbon T 900, grew 175, talc, chalk, Sibplast petroleum resin and Oxypan needle felt.
EFFECT: invention allows to improve the relative elongation at rupture of rubber and to increase the degree of its bulk swelling in oil.
1 cl, 2 tbl
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