If only two rings of packing are used in the stuffing box, how many degrees should the joints be staggered?

Staggering the joints in packing is vital for preventing leaks and ensuring even wear in the stuffing box. When only two rings of packing are used, staggering the joints between 90 to 180 degrees is recommended. This approach allows for an optimal arrangement, which minimizes the risk of leaks by reducing the chances of the joints aligning perfectly and creating a continuous path for fluid to escape.

This staggered configuration helps maintain sealing effectiveness by providing overlapping coverage where the packing rings meet, thus enhancing the overall integrity of the packing arrangement. This timing is most effective for two rings because it allows sufficient separation between the two joints, promoting more reliable sealing and extending the packing's lifespan.