A seed housing for a seeder, which seed housing is arranged to discharge seeds by means of an excess pressure, comprising: first and second seed housing parts (531, 532), which are adapted to be joined together for forming the seed housing, a singulating disc, which is movably arranged in the seed housing, and a sealing gasket, which is arranged to provide a seal between one of the seed housing parts and the singulating disc, wherein the sealing gasket is substantially made of a resilient rubber material or rubber-like material, wherein the sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile, the cross-sectional profile having: a first sealing part located furthest away from a centre of rotation of the body, characterised in that the cross-sectional profile having a second sealing part located radially inside said first sealing part, as viewed in the radial direction, an open space being defined by the first and second sealing parts, the second sealing part essentially curves through an angle away from the centre of rotation, the sealing gasket is also arranged to provide a seal between the seed housing parts (531, 532), the sealing gasket further comprises an attachment portion (5408, 5409), wherein the sealing parts (5402, 5403) extend from a first side of the main plane and the attachment portion (5408, 5409) extends from a second side of the main plane. first and second seed housing parts (531, 532), which are adapted to be joined together for forming the seed housing, a singulating disc, which is movably arranged in the seed housing, and a sealing gasket, which is arranged to provide a seal between one of the seed housing parts and the singulating disc, wherein the sealing gasket is substantially made of a resilient rubber material or rubber-like material, wherein the sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile, the cross-sectional profile having: a first sealing part located furthest away from a centre of rotation of the body, characterised in that the cross-sectional profile having a second sealing part located radially inside said first sealing part, as viewed in the radial direction, an open space being defined by the first and second sealing parts, the second sealing part essentially curves through an angle away from the centre of rotation, the sealing gasket is also arranged to provide a seal between the seed housing parts (531, 532), the sealing gasket further comprises an attachment portion (5408, 5409), wherein the sealing parts (5402, 5403) extend from a first side of the main plane and the attachment portion (5408, 5409) extends from a second side of the main plane. a first sealing part located furthest away from a centre of rotation of the body, characterised in that the cross-sectional profile having a second sealing part located radially inside said first sealing part, as viewed in the radial direction, an open space being defined by the first and second sealing parts, the second sealing part essentially curves through an angle away from the centre of rotation, the sealing gasket is also arranged to provide a seal between the seed housing parts (531, 532), the sealing gasket further comprises an attachment portion (5408, 5409), wherein the sealing parts (5402, 5403) extend from a first side of the main plane and the attachment portion (5408, 5409) extends from a second side of the main plane.