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How to install graphite packing
Jan 24, 2019

Cutting and installation of graphite packing:

1. Wrap the graphite packing around the tube of the same diameter as the shaft, wrap it tightly but not stretch, and cut it after alignment. Note: Do not measure the length by wrapping around the stuffing box. Cut the first seal ring and try to fill the stuffing box just right and make sure the joint is tight and seamless. The other seal rings are then cut with the first seal ring as a standard. If the seal ring is cut on a flat surface, the end face should be beveled to compensate for the deformation after winding. If the packing material is soft and subject to wear, wrap the tape around the slit and cut it on the tape side. You can decide whether to remove the tape according to the shape of the joint.

2. Wrap the graphite packing around the tube of the same diameter as the shaft, wrap it tightly but not stretch, and cut it after alignment. Note: Do not measure the length by wrapping around the stuffing box. Cut the first seal ring and try to fill the stuffing box just right and make sure the joint is tight and seamless. The other seal rings are then cut with the first seal ring as a standard. If the seal ring is cut on a flat surface, the end face should be beveled to compensate for the deformation after winding. If the graphite packing is soft and subject to wear, wrap the tape around the slit and cut it on the tape side. You can decide whether to remove the tape according to the shape of the joint.

3. After the seal ring is installed, tighten the cap bolts by hand. A certain leak must be maintained during startup, otherwise the packing will heat up and burn. Then tighten the nuts evenly in sequence until the leak rate meets the eligibility criteria. Water seal ring: It is recommended to install a water seal ring as much as possible and inject lubricant into the stuffing box through the water seal ring to lubricate the shaft and packing. The position of the water seal ring must be aligned with the injection hole.

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