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Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 4, pp. 44–45, April, 1971.
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Antipin, G.V., Bannikov, M.T. & Tikhonov, Y.I. Mechanical seal with reinforced polytetrafluoroethylene bellows. Chem Petrol Eng 7, 359–360 (1971). https://doi.org/10.1007/BF01145035
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DOI: https://doi.org/10.1007/BF01145035