A slip-on hydraulic packer system and method. The packer system includes a tubular, a packer assembly that includes a piston moveable within a cylinder, a sealing element connected to the piston, and a biasing member connected between a stop member and the piston. Retaining elements selectively connect the packer system to an exterior surface of the tubular. A predetermined amount of hydraulic pressure may be applied to move the piston moving the sealing element from an unset position to a set position. The retaining elements may be snap rings and/or set screws that engage a profile on the tubular. Hydraulic pressure may be applied from an interior of the tubular through a port in the tubular or from an exterior of the tubular through a port in the cylinder. The predetermined amount of hydraulic pressure may shear an element or burst a member before moving the piston.