problem with the stuffing box on prop shaft

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Nov 9, 2013
2
Hunter 27 Choptank MD
I have a small but concerning leak from the stuffing box. Does anyone know what size packing is required? I have a hunter 27 with a 8HP Renault engine a 1980 vintage.
 

thaeni

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Sep 28, 2008
120
Hunter 33.5 Chicago
You need to know the diameter of the shaft. My old 27' had a 1" shaft and took
1/4" packing.
 
Feb 26, 2004
23,352
Catalina 34 224 Maple Bay, BC, Canada
maygo,

Our "experience" is that 1" shafts can take EITHER 3/16" or 1/4". Buy both, return what you don't use or give it to a dock neighbor. Play it forward.
 

CalebD

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Jun 27, 2006
1,479
Tartan 27' 1967 Nyack, NY
I have a 1" shaft in a 27' boat (different engine & boat).
I recommend you start with 3/16" packing.
Remember, the packing needs to fit into the gland easily. The stuffing box nut(s) are used to put pressure on the packing which causes the packing to flatten and will fill any voids.
If you have to cram 1/4" packing in there then the compression nuts will not have much effect, if at all, and your stuffing box may get hot and perhaps will score your shaft.
 

pogo2

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Sep 26, 2008
97
Newport 30 Mklll North Tonawanda, NY
Gore-tex

I repacked my stuffing box this summer, using 3/16 Gore-Tex packing. According the info sheet no need for the packing to drip, as the packing being what it is will not heat up. Not cheap $17 for a 24 inch piece of packing :)
 
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