A disc tumbler cylinder lock, and characterized in that the disc tumbler cylinder lock comprises: a lock sleeve being a hollow tube; a lock cylinder base ; an end of the lock cylinder base forming an accommodating space , a position limiting opening , and an accommodating opening ; another end of the lock cylinder base forming a fixing rod ; the lock cylinder base rotatably mounted in the lock sleeve ; multiple discs ; each of the discs having a key hole , a position limiting protrusion , and a disc notch ; the key hole formed through the disc ; the position limiting protrusion protruding from an outer annular surface of the disc ; the disc notch concaved from the outer annular surface of the disc ; multiple gaskets ; each of the gaskets having a ring body , a position limiting segment , a rotation limiting segment , and a concave segment ; the ring body being a ring; the position limiting segment protruding outward from an outer annular surface of the ring body along a radial direction; the rotation limiting segment protruding from the position limiting segment along an axial direction of the lock sleeve ; the concave segment concaved from the outer annular surface of the ring body ; the discs and the gaskets staggeredly accommodated in the accommodating space ; a side surface of the position limiting protrusion abutting a side surface of the position limiting opening ; two sides of the position limiting segment abutting two opposite side edges of the position limiting opening ; each rotation limiting segment being adjacent to another side surface of the position limiting protrusion ; a needle roller mounted in the accommodating opening , characterized in that each of the gaskets has a gasket notch concaved inward; the rotation limiting segment is a bent sheet protruding from the gasket notch along the axial direction of the lock sleeve . a lock sleeve being a hollow tube; a lock cylinder base ; an end of the lock cylinder base forming an accommodating space , a position limiting opening , and an accommodating opening ; another end of the lock cylinder base forming a fixing rod ; the lock cylinder base rotatably mounted in the lock sleeve ; multiple discs ; each of the discs having a key hole , a position limiting protrusion , and a disc notch ; the key hole formed through the disc ; the position limiting protrusion protruding from an outer annular surface of the disc ; the disc notch concaved from the outer annular surface of the disc ; multiple gaskets ; each of the gaskets having a ring body , a position limiting segment , a rotation limiting segment , and a concave segment ; the ring body being a ring; the position limiting segment protruding outward from an outer annular surface of the ring body along a radial direction; the rotation limiting segment protruding from the position limiting segment along an axial direction of the lock sleeve ; the concave segment concaved from the outer annular surface of the ring body ; the discs and the gaskets staggeredly accommodated in the accommodating space ; a side surface of the position limiting protrusion abutting a side surface of the position limiting opening ; two sides of the position limiting segment abutting two opposite side edges of the position limiting opening ; each rotation limiting segment being adjacent to another side surface of the position limiting protrusion ; a needle roller mounted in the accommodating opening , characterized in that each of the gaskets has a gasket notch concaved inward; the rotation limiting segment is a bent sheet protruding from the gasket notch along the axial direction of the lock sleeve . <EOS>