Abstract: An system and method for coupling a capsule body and cap is provided. The system and method provide a first conduit configured to align a capsule body and a second conduit configured to align a capsule cap. The system and method provide for a pressure-relief cavity in at least one of the first conduit and the second conduit.

Abstract: A gelatin capsule is disclosed that is designed to impart less tensile stress on the component parts when it is in the closed position and experiences less spontaneous breakage particularly when fill with hygroscopic liquids. The gelatin capsule comprises a cap portion and a body portion. The cap portion includes an annular ring and the body portion includes an annular groove. Together, the annular ring and the annular groove comprise a locking ring, which are designed to reduce the capsule cap and body contact force and stress raisers. The invention includes a cap locking ring inner diameter that is same as body locking ring outer diameter or slightly smaller to make the contacting force at the locking ring lower than current capsule designs. The body portion also includes a tapered ring configured such that, in the closed position the rim of the body portion does not contact the cap portion.