Pump with a resilient seal

A pump comprising:

• a housing, the housing having an interior defining a rotor path;
• an inlet formed in the housing at a first position on said rotor path;
• an outlet formed in the housing at a second position on said rotor path spaced from said first position;
• a rotor rotatable in said housing,
• at least one first surface formed on the rotor and sealing against said rotor path of the housing,
• at least one second surface formed on said rotor circumferentially spaced from said at least one first surface and forming a chamber with the rotor path that travels around said rotor path on rotation of the rotor to convey fluid around the housing from the inlet to the outlet;
• and
• a resilient seal
• formed in one piece with the housing,
• the seal and the housing comprising the same material,
• the seal located on said rotor path and extending between the outlet and the inlet in the direction of rotation of said rotor
• wherein the at least one first surface seals with, and resiliently deforms, the seal, as the rotor rotates around the rotor path within the housing to prevent fluid flow from said outlet to said inlet past the seal.