How Back-Up Rings Help Control Packing Extrusion in Worn Stuffing Boxes
When pump packing starts pushing out of place, the problem may not be the packing alone. In many cases, the real issue is excess clearance inside a worn or wallowed stuffing box. Back-up rings help inhibit extrusion, support the packing set, and keep pumps operating reliably when the stuffing box is no longer in ideal …
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