FIELD: production of sealing materials. SUBSTANCE: fluoroelastomer copolymer comprises vinylidene fluoride monomeric units (their quantity is 50-80 mol %), hexafluoropropylene monomeric units (their quantity is 16-30 mol %) and ethylene monomeric units (their quantity is 4-20 % mol %, 4-15 mol % being preferable). Fluoropolymers being vulcanized by ionic systems have high elastomer characteristics at low temperature. EFFECT: improved quality of desired product. 2 cl, 4 tbl
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