The main advantage of packing structure is simple, low cost, wide application, the main drawback is that life is short, poor sealing performance. The following shows the causes of several packing and removal method in the repair process for your reference:
(1) fill squeeze the shaft (or stem) and the ring or the shaft (or stem), and the gap between the gland, the more because the design of the gap is too large or eccentric. Can reduce the gap, check concentricity to resolve.
(2) the outer surface of filler injury research may lateral packing gland leakage is due to packing diameter is too small. Check the stuffing can be resolved and packing size.
(3) packing ring to squeeze into the nearby circle is cut too short because the packing ring. The correct size by replacing the packing solution.
(4) media along the packing gland leakage, because improper assembly or packing ring and damage. Should first check the ring situation and then reinstall.
(5) section near the gland packing too tight, the assembly is due to improper packing. Should be carefully re-install.
(6) filler coke or black, because the lubrication failure. Lubricant should be replaced with the appropriate filler, or lubricant into the packing rings can supply.
(7) along the shaft (or stem) of the axis of serious wear and tear or scratches, because the existence of impurities or internal lubrication failure. Packing should be replaced with a lubricant or lubricant filler loading can supply ring, stuffing box should also be carefully cleaned.
(8) leak is too large, has been unable to adjust. Because of expansion or destruction or filler filler cut too short or assembly error or lubricant is washed away or eccentric. By replacing the role of resistance to seal the liquid filler, check the concentricity of the shaft or valve stem.
