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Old 05-10-2013, 02:30   #1
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Greasing stuffing box

My prop shaft stuffing box has a remote greaser on it.The stuffing box is packed with a white teflon packing.
Does this type of packing need to be greased?
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Old 05-10-2013, 03:30   #2
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Re: Greasing stuffing box

As far as I can gather the answer is yes. I have similar packing with a grease nipple feed. All advice is to keep the grease supplied to the packing.
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Old 05-10-2013, 04:15   #3
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Re: Greasing stuffing box

I would be careful of what grease I used. Teflon may not be compatible with some hydro carbon type. Don't know--jus sayin !
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Old 05-10-2013, 05:02   #4
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Re: Greasing stuffing box

"Dripless" shaft glands do not use water for lubrication and therefor require (in most cases) grease. Waterproof wheel bearing grease is normally a good choice, but as usual, it is best to follow mfg specs.

Teflon(R) (PTFE) is insoluble in just about anything short of Hydrofluoric Acid, and is unaffected by any hydrocarbon based products.
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Old 05-10-2013, 19:25   #5
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Re: Greasing stuffing box

Thank you for the replies,I will carry on with the grease.
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Old 21-10-2013, 14:37   #6
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Re: Greasing stuffing box

Quote:
Originally Posted by Davo1404 View Post
My prop shaft stuffing box has a remote greaser on it.The stuffing box is packed with a white teflon packing.
Does this type of packing need to be greased?
I usually give 1 1/2 turns to the greaser after every trip or say 6 hrs engine running time.

Might get a saucer full of drips in 6 hrs engine running time so happy with that
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Old 22-10-2013, 08:50   #7
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Re: Greasing stuffing box

I endorse Tynesider's advice. Important not to over-grease or you'll exclude all the cooling seawater and risk the stuffing box overheating and scoring the propshaft. Better to have a regular drip than none at all!

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Old 22-10-2013, 09:33   #8
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Re: Greasing stuffing box

Some years ago I packed a stuffing box with a goretex based product sold by West Marine. They also sold a special teflon based grease for use with that packing. Applied once at installation, never renewed in years of usage. The gland ran cool, didn't drip and was a great success. You might just have a look in their catalog for current products.

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Old 22-10-2013, 11:22   #9
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Re: Greasing stuffing box

How do you lube a dripless shaft? Do you need to pull the boat?
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