Deep sea seal

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Pugwash1952

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I am looking to install a reconditioned engine in a 24ft glass fiber sailing boat that I am building. It is an 18hp Kabuto and looking at the various options between a stuffing box and deep sea seal I have been directed toward a seal made by T Norris Marine. I have also looked at comments on the forum and the Volvo seal is said to be more reasonably priced, with better results. Can anyone direct me to where I can find more information about the Volvo seal, including price and suppliers.

Thanks
 
I've had the VP shaft seal (Rubber Packing Box) fitted to two boats, and not a drop of water has come in via the seal.

There is a lot of advice on these seals, and as long as you grease it at least once a year, and "burp" it after you have dried out and refloated, it will last a very long time.

On one boat, the seal was fitted in 1984, and still the same one when we sold her 3 years ago. On the present boat, the seal was fitted in 1986, and I only changed it this year as I had the shaft coupling adrift and took the opportunity of changing it for the new spare I had - otherwise it would have remained for a few more years

This site will show you sizes and prices.

If you want an installation/operation instruction sheet, PM me your email address.
 
Hi Philip,
Thank you for your reply. This is only the second time that I have posted a question so I'm not fully familiar with the forum.
My email address is I am a novice at boat building so any assistance with instillation would be very welcome.
I look forward to hearing from you.
Andrew
 
Endorse the Volvo seal. Simple, reliable, easy to install, low cost and minimum maintenance. You do not say what type of stern tube you have. You need to check the outside diameter of the tube against the data sheet as the seal clamps to that. Looks like you will need a 1 inch or 25mm shaft. Make sure which it is so that you get the right size seal and cutless bearing.
 
[ QUOTE ]
..................it will last a very long time.

On one boat, the seal was fitted in 1984, and still the same one when we sold her 3 years ago. On the present boat, the seal was fitted in 1986, and I only changed it this year as I had the shaft coupling adrift and took the opportunity of changing it for the new spare I had - otherwise it would have remained for a few more years ...................... [ QUOTE ]


Almost an identical experience to us!! We changed our VP seal a couple of years ago solely as part of a major refit. It was the original 1984 one and had never let so much as a drop into the boat.

I simply don't understand why people bother with the old-fashioned stuffing glands which drip water into the bilges. Ugh! Or indeed, spend relatively huge sums on PSS type seals, when fitting the VP seal is so incredibly simple and the maintenance next to nothing!

It's a brilliant design IMHO.
 
Hi Philip,
Thanks for your reply to my question about the Volvo seal's and your offer to forward instillation instructions. I have not received them as yet (but can't remember if I had ask you to forward them or not!) Anyway, it would be great if you could. My email address is andrew@cushuish.wanadoo.co.uk
One other question - with the proposed instillation of my engine - is it very difficult to align the engine, prop shaft and stern gland. I have been told it would be better to incorporate an Aqua Valve between the gear box and the prop shaft. This is obviously more expensive and I would probably have to cut into the hull to accommodate it which I am obviously reluctant to do.
Any advice would be great, or if your unable to help I could post the question on the forum.
Thanks
Andrew
 
[ QUOTE ]
.... it would be better to incorporate an Aqua Valve between the gear box and the prop shaft.

[/ QUOTE ]
You probably mean an Aquadrive
I can't see why you would have to cut into the hull to fit one, but you will need some space between the gearbox coupling and the prop shaft seal (about 250-300mm I think) to fit one.
 
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