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Рабочая жидкость 7-50С-3 (ГОСТ 20734-75) — The liquid is made from a mixture of polysiloxane liquid and organic ether with the addition of an anti-wear additive and oxidation inhibitors.synthetic liquid, used in hydraulic units and hydraulic systems of aircraft in the temperature range from -60 to + 175 °C for a long time, with overheating up to 200 °C; operating pressures up to 21 MPa.
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