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Sealing device (100) for feeding through at least one filament (600), the sealing device (100) comprising a housing (200), said housing (200) comprises a seal block compartment (300) being laterally bounded by a front wall (310) and a back wall (320) being spaced apart and opposite to each other, an

Sealing device (100) for feeding through at least one filament (600), the sealing device (100) comprising a housing (200), said housing (200) comprises a seal block compartment (300) being laterally bounded by a front wall (310) and a back wall (320) being spaced apart and opposite to each other, and side walls (330, 340) being spaced apart and opposite to each other, said side walls (330, 340) joining the front wall (310) and the back wall (320), wherein the seal block compartment (300) has an open top face (350), wherein the front wall (310) and the back wall (320) each comprise several slots (370, 380, 470, 480) having an open end (375, 385, 475, 485) at the open top face (350) of the seal block compartment (300), wherein each of the slots (370, 380) in the front wall (310) corresponds to and is aligned with a slot in the back wall (320), and a seal block (500) being arranged in the seal block compartment (300), wherein the seal block (500) comprises slits (570, 580) being open sided towards the open sided top face (350) of the seal block compartment (300), each slit (570, 580) being aligned with one the slots (370, 380) in the front wall (310) and one of the slots (470, 480) in the back wall (320), these two slots (370, 470; 380, 480) being slots corresponding to each other, so that one can feed through a filament by sliding an intermediate part of the filament (600) from the open end (575, 585) into the slit (570, 580) and the corresponding slots (370, 470; 380, 480) of the front wall (310) and back wall (320).

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1. Sealing device for feeding through at least one filament, the sealing device comprising: a one-piece housing, said housing comprising a seal block compartment being laterally bounded, wherein the seal block compartment comprises an open top face and only four slots, wherein each slot has an open

1. Sealing device for feeding through at least one filament, the sealing device comprising: a one-piece housing, said housing comprising a seal block compartment being laterally bounded, wherein the seal block compartment comprises an open top face and only four slots, wherein each slot has an open end at the open top face of the seal block compartment, wherein each one of the slots corresponds to another one of the slots, wherein slots corresponding to each other are aligned and located on opposite sides of the bounded seal block compartment, anda one-piece seal block being arranged in the seal block compartment, wherein the seal block includes only first and second slits being open sided towards the open sided top face of the seal block compartment, each slit defined by a pair of opposing surfaces, each slit being aligned with two slots corresponding to each other, so that one can feed through a filament by sliding an intermediate part of the filament from the open end into the slit and the corresponding slots in the seal block compartment, wherein the one-piece seal block is continuous intermediate the first and second slits, is continuous between the first slit and a first bounding inner side wall of the of the one-piece housing, and is continuous between the second slit and a second bounding inner side wall of the one-piece housing. 2. The sealing device of claim 1, wherein said seal block compartment is laterally bounded by a front wall and a back wall being spaced apart and opposite to each other, and the first and second side walls being spaced apart and opposite to each other, said first and second side walls joining the front wall and the back wall, wherein the front wall and the back wall each comprise several slots of the slots having said open end at the open top face of the seal block compartment, wherein each of the slots in the front wall corresponds to and is aligned with one of the slots in the back wall, and wherein said slits comprised by the seal block being open sided towards the open sided top face of the seal block compartment, are each aligned with one of the slots in the front wall and one of the slots in the back wall, wherein these two slots are slots corresponding to each other, so that one can feed through said filament by sliding an intermediate part of the filament from the open end into the slit and the corresponding slots of the front wall and back wall. 3. The sealing device of claim 2, wherein the several slots in the front wall and the back wall are aligned in parallel. 4. The sealing device of claim 2, wherein the slots extend in the front wall and back wall from the open top of the seal block compartment in a direction towards a bottom of the seal block compartment. 5. The sealing device of claim 2, wherein at least for one set of slots corresponding to each other in the front wall and the back wall the width of the slots differs. 6. The sealing device of claim 2, wherein the front wall of the seal block compartment is part of the front face of the housing. 7. The sealing device of claim 2, the seal block is compressed by the sidewalls of the seal block compartment. 8. The sealing device of claim 2, wherein the seal block fills the complete cross section of the seal bock compartment in planes perpendicular to the front wall of the seal block compartment. 9. The sealing device of claim 1, wherein the slots are U-shaped. 10. The sealing device of claim 1, wherein the seal block is formed of a resilient compressible material. 11. The sealing device of claim 1, wherein the seal block is a foam block. 12. The sealing device of claim 1, wherein the opposing surfaces of each slit are in contact which is other to provide a sealing of the corresponding slot. 13. The sealing device of claim 1, wherein the housing comprises a bottom wall of the seal block compartment. 14. The sealing device of claim 1, wherein the housing comprises grooves and/or bars oriented in parallel to the slots for mating with bars and/or grooves, respectively, provided adjacent to a clearing in a box to enable a slid- in connection of the sealing device into the box. 15. The sealing device of claim 1, wherein the housing is at least partly hollow. 16. The sealing device of claim 1, wherein the seal is created absent further introduction of components or sealing forces. 17. The sealing device of claim 1, wherein the seal created by the conformingly sealable material of the one-piece seal block comprises a seal against moisture and dust. 18. The sealing device of claim 1, wherein the conformingly sealable material of the one-piece seal block comprises an ethylene-propylene-diene-monomer (EPDM). 19. The sealing device of claim 1, wherein the conformingly sealable material of the one-piece seal block has a density of 180±20 kg/m3. 20. The sealing device of claim 1, wherein the conformingly sealable material of the one-piece seal block includes a plurality of closed cells wherein each of the closed cells has a cell size that varies between 0.2 to 0.5 mm. 21. A sealing device for feeding through at least one filament, the sealing device comprising: a seal block compartment, the seal block compartment being laterally bounded, wherein the seal block compartment includes an open top face, a first slot on a first side of the seal block compartment and a second slot on a second opposing side of the seal block compartment; anda seal block insertable within the seal block compartment, wherein the seal block includes only first and second slits that are open sided towards the open top face of the seal block compartment, the first and second slits being aligned between a pair of first and second slots, the first and second slits configured to receive a filament therein via the open side of the slit, wherein the seal block is continuous between the first and second slits, wherein the seal block is continuous between the first slit and a first bounding inner side wall of the seal block compartment and wherein the seal block is continuous between the second slit and a second bounding inner side wall of the seal block compartment, wherein the first and second bounding inner side walls compress the seal block when the seal block is inserted in the seal block compartment. 22. The sealing device of claim 21, wherein the seal is created absent further introduction of components or sealing forces.