A manually operated seal/closure system for a fluid dispenser manifold is disclosed. The manifold includes at least one nozzle and, more typically, a plurality of nozzles ranging from more than one to twelve or more. The manifold housing includes a sidewall or other stationary structure. The stationary sidewall is pivotally connected to an arm. The sidewall further includes a lateral slot and a curved slot. The arm includes a proximal end pivotally connected to the sidewall and a distal end with an elongated slot disposed therebetween. The closure system also includes a bracket for supporting a cup and a seal. The bracket is coupled to the arm and the sidewall by a first pin that extends from the bracket through the lateral slot in the sidewall and through the elongated slot of the arm. The brackets also coupled to the sidewall by a second pin that extends through the lateral slot of the sidewall and laterally between the first pin and the manifold.