The invention provides a device for closing parachute packs, each of which has a plurality of flaps and a closing cord (36), the device (10) being characterised by a base (12) for bearing on a flap in one direction during the packing operation, and by a mechanism (18, 22) adapted to draw a pull cord (34) connectable to the closing cord (36) in substantially an opposite direction to allow the flaps to be secured relative to the closing cord (36) by a pin.