A switchgear cabinet system, which is assembled from switchgear cabinet units strung together in a row, each switchgear cabinet unit comprising a rack which is made up of frame profiles, in which at least the vertical frame profiles have the following features: the frame profile (100, 100'; 200, 200'; 300, 300') is mirror symmetrical with respect to a cross-sectional diagonal; the frame profile has profile sides (111, 112; 211, 212; 311, 312) that form the outer sides of the rack; projecting outward from the profile sides (111, 112; 211, 212; 311, 312) are profile projections (114, 115; 214, 215; 314, 315), each extending outward from one of the profile sides (111, 112; 211, 212; 311, 312); when two racks are strung together, corresponding profile projections (114, 115; 214', 215; 314', 315) of two frame profiles are situated mirror symmetrically opposite one another in each case, leaving a gap between the end faces of the profile projections, which is closed by a seal (510, 530, 550), said seal being a push-on seal which is seated on at least one of the opposing profile projections (114', 115; 214', 215; 314', 315) and which has at least two legs (512, 514; 532, 534; 552, 554) located opposite one another, between which a gap (516; 536; 556) is formed, the width of which is less than or equal to the width of the profile projection of the selected frame profile, characterized in that either a) the bridge that connects the opposing legs (532, 534; 552, 554) of the push-on seal (530; 550) has a bearing surface (538; 558) which is wider than the thickness of the profile projection of the frame profile to be attached there, and the opposing legs (552, 554) of the push-on seal (530;550) have different lengths or widths, or b) the push-on seal is substantially H-shaped in cross-section, and between the opposing legs (520, 522) of the push-on seal a gap is formed, which widens starting from the bridge that connects the legs. the frame profile (100, 100'; 200, 200'; 300, 300') is mirror symmetrical with respect to a cross-sectional diagonal; the frame profile has profile sides (111, 112; 211, 212; 311, 312) that form the outer sides of the rack; projecting outward from the profile sides (111, 112; 211, 212; 311, 312) are profile projections (114, 115; 214, 215; 314, 315), each extending outward from one of the profile sides (111, 112; 211, 212; 311, 312); when two racks are strung together, corresponding profile projections (114, 115; 214', 215; 314', 315) of two frame profiles are situated mirror symmetrically opposite one another in each case, leaving a gap between the end faces of the profile projections, which is closed by a seal (510, 530, 550), said seal being a push-on seal which is seated on at least one of the opposing profile projections (114', 115; 214', 215; 314', 315) and which has at least two legs (512, 514; 532, 534; 552, 554) located opposite one another, between which a gap (516; 536; 556) is formed, the width of which is less than or equal to the width of the profile projection of the selected frame profile, characterized in that either a) the bridge that connects the opposing legs (532, 534; 552, 554) of the push-on seal (530; 550) has a bearing surface (538; 558) which is wider than the thickness of the profile projection of the frame profile to be attached there, and the opposing legs (552, 554) of the push-on seal (530;550) have different lengths or widths, or b) the push-on seal is substantially H-shaped in cross-section, and between the opposing legs (520, 522) of the push-on seal a gap is formed, which widens starting from the bridge that connects the legs. a) the bridge that connects the opposing legs (532, 534; 552, 554) of the push-on seal (530; 550) has a bearing surface (538; 558) which is wider than the thickness of the profile projection of the frame profile to be attached there, and the opposing legs (552, 554) of the push-on seal (530;550) have different lengths or widths, or b) the push-on seal is substantially H-shaped in cross-section, and between the opposing legs (520, 522) of the push-on seal a gap is formed, which widens starting from the bridge that connects the legs.