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Stuffing Box

Stuffing Box. A stuffing box is an assembly that contains a seal around a rotating shaft passing from a fluid-filled area to vapor filled area. Where is it used? Propeller on a boat Large centrifugal pumps Steam engine Et al. How it Works. Acts like a large scale compression fitting

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Stuffing Box

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  1. Stuffing Box • A stuffing box is an assembly that contains a seal around a rotating shaft passing from a fluid-filled area to vapor filled area. • Where is it used? • Propeller on a boat • Large centrifugal pumps • Steam engine • Et al.

  2. How it Works • Acts like a large scale compression fitting • Stuffing is trapped behind a removable gland • Leaks a few drops per minute while the shaft is turning • 10 psi lubricant can be used if the process fluid is abrasive

  3. Operating Conditions • Flax stuffing boxes are used to hold steam inside the cylinder of a steam engine • More extreme conditions would require more high-tech stuffing material • Oil field stuffing boxes can operate up to 540°F and 3,000 psi

  4. Materials of Construction • Packing material • Greased flax, teflon(polytetrafluoroethylene), graphite • Rigid materials • Cast iron, brass, aluminum, or carbon steel

  5. Suppliers • Gould Pumps (pumps) www.gouldpumps.com • Taco-HVAC (pumps) www.taco-HVAC.com • Boat Designs (boat propeller passthrough) www.boatdesigns.com • Harbison-Fischer (oil field) www.hfpumps.com • Robbins & Myers (oil field) www.rmenergy.com

  6. Works Cited • Glen-L marine designs. (n.d.). Rudder Stuffing Box. Retrieved from boatdesigns.com: http://www.boatdesigns.com • Harbison-Fischer Mfg. Co. (n.d.). Harbison-Fischer Stuffing Boxes. Retrieved from hfpumps.com: http://www.hfpumps.com/catalog/harbison-fischer-stuffing-boxes • houtxfisher. (2010, January 3). How can I tell if my boat has a dripless stuffing box? Retrieved from The Hull Truth Boating Forum: http://www.thehulltruth.com/boating-forum/259765-how-can-i-tell-if-my-boat-has-dripless-stuffing-box.html • Robbins & Myers, Inc. (n.d.). Hercules Stuffing Boxes. Retrieved from rmenergy.com: http://www.rmenergy.com/ProductionSolutions/GeneralOilfield/GeneralOilfieldProducts/HerculesStuffingBoxes.aspx • Stuffing Box Packing - Goulds Pumps - ITT Corporation. (n.d.). (ITT Corporation) Retrieved from Goulds Pumps Industrial Products: http://www.gouldspumps.com/pag_0011.html • White, R. E. (1980, February 19). Patent No. 4,328,974. United States of America. • Wikimedia Corporation. (n.d.). Stuffing Box. Retrieved from Wikipedia: http://en.wikipedia.org/wiki/Stuffing_box

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