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Matt Miller, Which Silicone Grease?
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Author:  Chekika [ Thu Jan 22, 2009 6:23 pm ]
Post subject:  Matt Miller, Which Silicone Grease?

Matt, I’m in the process of replacing my twist-n-seal hatch cover o-rings—they are sloppy--causing the hatch covers to leak. Hobie recommends using “silicone sprayâ€

Author:  quirkster [ Fri Jan 23, 2009 5:59 am ]
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good question keith. I was thinking of forcing some silcone grease into the steering and rudder up down line tubes to reduce water intake. Where do you buy this stuff? I take it you can't just drive down to Ace Hardware.

BTW the broken steering tube on the Adventure is fixed. I scavenged one off the Revo. a replacement is on back order.

Author:  mmiller [ Fri Jan 23, 2009 10:18 am ]
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Silicone for sure. Petroleum grease will swell the o rings and make them sloppy.

I will have to copy this question to our factory and engineers for what kind.

Author:  quirkster [ Fri Jan 23, 2009 10:30 am ]
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I take it back. Stopped in at Ace hardware today. My favorite hardware owner said the flourosilicon orings are blue so i figure we have the black nitrile. He also had a small container of silicone grease. He said you must work it in to the o ring.

Author:  Chekika [ Fri Jan 23, 2009 11:09 am ]
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There is quite a bit on the web--quite a bit of confusion, that is. I tried to get silicone grease at my Ace but they did not have any. It is common at dive shops and that is where I found it.

The fluorosilicone grease is commonly used on the red, blue, yellow o-rings/gaskets of waterproof camera housings and some dryboxes.

I agree, the Hobie hatch o-ring is probably the black nitrile material and regular silicone grease is the correct one for that.

Hopefully, the Hobie engineers can confirm.


Author:  mmiller [ Fri Jan 23, 2009 11:47 am ]
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Will take some time... the work M-Th... off today and the chief engineer is out for the next week.

Author:  Pirate [ Fri Jan 23, 2009 1:14 pm ]
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Sorry to detour this thread but would silicone grease be appropriate for the seals in underwater cameras too?...Pirate

Author:  Chekika [ Fri Jan 23, 2009 1:46 pm ]
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It is my understanding that most of these seals are silicone and fluorosilicone is the correct grease, but all the camera companies are very secretive and insist that you use their expensive lubricants.


Author:  Tom Ray [ Fri Jan 23, 2009 7:34 pm ]
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I hope silicon grease was OK, because I put some on our boats. Seems to be fine. Don't use any more than needed. It's a magnet for sand.

Author:  Roadrunner [ Sat Jan 24, 2009 12:12 am ]
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That's a good reason not to use silicone grease in your rudder line tubes where the magnetized sand can chew up the spectra lines and rubber o ring tube seals, or migrate into the rudder assembly. for these purposes silicone spray is best if anything IMO (the carrier evaporates).

I also use an occasional light coating of silicone grease on my replacement 8" hatch seals -- hasn't caused any problems so far. When cleaning the boat afterwards, I open the hatches for airing and wipe off any accumulated sand or grit at that time. 8)

Author:  mmiller [ Mon Jan 26, 2009 9:52 am ]
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The cheif engineers says... "regular silicone grease". Didn't offer more detail than that.

Author:  Chekika [ Mon Jan 26, 2009 9:59 am ]
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That is fine, Matt. Thanks.


Author:  mmiller [ Mon Feb 09, 2009 1:56 pm ]
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Danco Silicone Grease

Available in the plumbing section of Home Depot.

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