A fire protection collar which can be installed on a wall or ceiling, for the purpose of sealing off conduits which pass through walls or ceilings, having an intumescent fire protection insert, a cladding part which surrounds the fire protection insert, wherein the fire protection insert is arranged on the inner side thereof, and at least one fastening part which protrudes radially outward from at least one end face of the cladding part, is characterized in that the intumescent fire protection insert is designed as a molded body which yields to deformation, which entirely fills in the space encompassed by the housing, and which is a two-piece component formed from two elements.