Abstract: A system for reducing packing ring spin and opening up of the joints formed by the ends of a packing ring during break-in of trapezoidally-shaped mechanical braided packing involves utilization of additional warp yarns within the sides of the packing. These additional warp yarns bulge the packing at the sides of the packing above its horizontal centerline such that the outer portion of the packing is provided with a solid rectangular cross section. The solid section increases frictional contact between the rings and the stuffing box and between the rings themselves to eliminate packing ring spin. When the packing is wrapped around a shaft the bulging sides become flat for secure elongated anti-spin contact both between the packing rings and between the end ring and the bottom of the stuffing box.

Abstract: A non-symmetrical construction of braided mechanical compression packing which does not undergo undesired deformation when placed in use. This non-symmetry of construction results in longer packing life and reduced shaft wear when used to prevent leakage about rotating shafts.

Abstract: A non-symmetrical construction of braided mechanical compression packing which includes warp yarns removed from the inner corners to prevent "popping" of these yarns during manufacture or when the packing is wrapped about a shaft. Additionally, a number of embodiments involving interior space filled with varying numbers of warp yarns at different positions produce an optimal warp density gradient in the finished braid, such that the braid has a more regular trapezoidal cross-section prior to being wound about a shaft, with the higher density occurring at the outside of the packing and tapered in density toward the inside of the packing. This non-symmetry of construction results in longer packing life and reduced shaft wear when used to prevent leakage about rotating shafts.

Abstract: A non-symmetrical construction of braided mechanical compression packing which does not undergo undesired deformation when placed in use. This non-symmetry of construction results in longer packing life and reduced shaft wear when used to prevent leakage about rotating shafts.