A semi-hermetic compressor comprising: a casing main body having an end opening and a circumferential lip surrounding the end opening, the circumferential lip defining a first radially facing circumferential surface; a casing end cover (12; 18) having a circumferential lip defining a second radially facing circumferential surface; said first circumferential surface and said second circumferential surface interfacing along an endless circumferential interface; and a sealing arrangement for sealing said interface, said sealing arrangement including: a first circumferentially extending recess formed in one of said first and second circumferential surfaces (48, 62), said first recess having a base; a sealing member disposed within said first recess in sealing contact with the one of said first recess and in sealing contact with the other one of said circumferentially extending surfaces (48, 62); and a second circumferentially extending recess formed in the other one of said first and second circumferential surfaces (48, 62) opposite said first recess, said second recess having a base; wherein each of said first recess and said second recess has a sidewall and an open side and disposed in overlapping relationship thereby forming a pocket therebetween; wherein said sealing member is disposed within said pocket and in sealing contact with the base of said first recess and with the base of said second recess; and wherein the sealing member is disposed to be in sealing contact with the sidewall of the circumferentially extending first recess. a casing main body having an end opening and a circumferential lip surrounding the end opening, the circumferential lip defining a first radially facing circumferential surface; a casing end cover (12; 18) having a circumferential lip defining a second radially facing circumferential surface; said first circumferential surface and said second circumferential surface interfacing along an endless circumferential interface; and a sealing arrangement for sealing said interface, said sealing arrangement including: a first circumferentially extending recess formed in one of said first and second circumferential surfaces (48, 62), said first recess having a base; a sealing member disposed within said first recess in sealing contact with the one of said first recess and in sealing contact with the other one of said circumferentially extending surfaces (48, 62); and a second circumferentially extending recess formed in the other one of said first and second circumferential surfaces (48, 62) opposite said first recess, said second recess having a base; wherein each of said first recess and said second recess has a sidewall and an open side and disposed in overlapping relationship thereby forming a pocket therebetween; wherein said sealing member is disposed within said pocket and in sealing contact with the base of said first recess and with the base of said second recess; and wherein the sealing member is disposed to be in sealing contact with the sidewall of the circumferentially extending first recess. a first circumferentially extending recess formed in one of said first and second circumferential surfaces (48, 62), said first recess having a base; a sealing member disposed within said first recess in sealing contact with the one of said first recess and in sealing contact with the other one of said circumferentially extending surfaces (48, 62); and a second circumferentially extending recess formed in the other one of said first and second circumferential surfaces (48, 62) opposite said first recess, said second recess having a base; wherein each of said first recess and said second recess has a sidewall and an open side and disposed in overlapping relationship thereby forming a pocket therebetween; wherein said sealing member is disposed within said pocket and in sealing contact with the base of said first recess and with the base of said second recess; and wherein the sealing member is disposed to be in sealing contact with the sidewall of the circumferentially extending first recess.