TY JOUR TI THE USE OF A COMBINED SEAL TO REDUCE THE LOAD ACTING ON THE CYLINDER PISTON SEAL KW lip seal KW reciprocating compressor KW cylinder piston group KW sealing resource KW compressor efficiency JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Roman, R.E. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov