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Old 11-09-2012
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Omatako Omatako is offline
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Re: Stuffing box & grease fittings

I am contemplating making a dripless seal for my propshaft. Yes I know you can buy them but they're expensive and besides it's not only about saving money, it's about the sense of satisfaction.

A Marelon tube with three double-lipped oil seals as used in vehicle wheel bearings but the type that is fully rubber encased to prevent the shell from rusting. Between each seal a collar with a groove running around to distribute grease to the bleed-through hole.

The first two seals face the incoming water, the third at the other end of the tube faces the other way to contain the grease.

Then a zerk (? - I call them grease nipples) between the seals that allow the whole assembly to be pumped full of waterproof grease. From outside it would look like this:

It will take up less space on the shaft than the stuffing box I have now which I actually consider to be pre-historic and I reckon it will work really well.

Any reason why this would not work? The total cost excluding my labor (which when invoiced to me is really inexpensive ) would be about $40.

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