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Timmay

Tracking fin sealant

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Timmay

I was thinking of using 3M 4200 to seal my new tracking fin. It's the weakest bonding underwater rated sealant I could find. Does anyone have other suggestions?

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flapjack

what was the old one mounted with?

I thought most connections were done with just silicone from the factory.

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Timmay

what was the old one mounted with?

I thought most connections were done with just silicone from the factory.

Silicone is not underwater rated. I did find out what they use from a Malibu tech.

Boatlife Life Seal

It's a silicone with poly in it, specifically designed for fiberglass and gelcoat and it's underwater rated.

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JB-FOOT

I am very curious, why wouldn't you want to use the same thing that Malibu uses?

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Timmay

I am very curious, why wouldn't you want to use the same thing that Malibu uses?

I'm using the Boatlife Life Seal, I was waiting for their answer when I posted here. I searched but nobody had a specific answer to this question.

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dtrost27
NorCaliBu

Any silicone rated for continuous underwater use will work fine. I added a 3rd fin to my Sporty and installed it with silicone (cont. underwater rated) and it's been on there for years now. No problems and we have a pretty tight turn around at one end of the course which is done under full power.

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WakingMeHappy

Duck tape can fix anything.

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SlickNick
On 2/11/2013 at 8:53 PM, NorCaliBu said:

Any silicone rated for continuous underwater use will work fine. I added a 3rd fin to my Sporty and installed it with silicone (cont. underwater rated) and it's been on there for years now. No problems and we have a pretty tight turn around at one end of the course which is done under full power.

Curious. Did you install the fin only with sealant? Or did you drill or tap holes for the bolts as well? 

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