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Re: [PSUBS-MAILIST] sikaflex suggestion



A thought on Sikaflex - it's used in conventional boatbuilding and is a bear to remove.
 
Have you considered making your own O-rings?  You can get it in many diameters.  Comes in rolls.  I believe you heat up both ends (of any length) and join them together.  Lay down two or three O-rings of any shape but make sure to offset the joins.
 
Rick Lucertini
Vancouver, Canada
 
 
----- Original Message -----
Sent: Friday, July 17, 2009 7:46 AM
Subject: RE: [PSUBS-MAILIST] sikaflex suggestion

You know what might have happened Emile is that it might have been too cold when I installed it. After all, it is called ROOM TEMPERATURE vulvanization. Just speculating, I don't really know why it stayed liquid.



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From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Emile van Essen
Sent: Thursday, July 16, 2009 4:43 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] sikaflex suggestion

RTV isnt that bad. I have good results with peppers dome (210 meter!) . Fix and forget. Does not stay liquid.

Emile


Van: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] Namens Recon1st@aol.com
Verzonden: donderdag 16 juli 2009 18:46
Aan: personal_submersibles@psubs.org
Onderwerp: Re: [PSUBS-MAILIST] sikaflex suggestion

Good luck Vance. The quick and dirty seems right for my small viewports. Don't foresee

any removal in the near future. Besides I have always enjoyed destruction ehheheh

Dean

In a message dated 7/16/2009 9:17:29 A.M. Central Daylight Time, vbra676539@aol.com writes:

Yeah, understood. The point to RTV for George was that it serves both as gasket and sealant, ie., quick and dirty, and it works. Not fun later, as I said, but it's great stuff. I was thinking of cutting thin red rubber gaskets (1/8" thickness) then using a thin coating of RTV on both sides. That would give me the soft barrier and less vulcanized goo down the road. Wish me luck
Vance


-----Original Message-----
From: Recon1st@aol.com
To: personal_submersibles@psubs.org
Sent: Wed, Jul 15, 2009 9:05 pm
Subject: Re: [PSUBS-MAILIST] sikaflex suggestion

That is what I have heard about RTV. So I am assuming then you would use

Sikaflex. It sounds right but there about 400 different versions. Hard on a poor old

boy like me.

Dean

In a message dated 7/15/2009 7:39:06 P.M. Central Daylight Time, vbra676539@aol.com writes:

I haven't looked into it. Mine were bedded in RTV, which sealed effectively, but were not what I'd call great fun to get out again for paint, etc. Sikaflex doesn't cure the same way, and never takes a set. RTV is, of course, the acronym for room temperature vulcanizing, and they ain't kidding. It bonds and sets up something fierce. The other problem with it is that RTV can't be repaired. It won't bond chemically to itself once the original application kicks. Meaning that if you have a leaker, you get to try out the car jack again to break the port loose (and hope that the RTV is the ONLY thing that breaks). In either case, you have to start scraping and go back to square one. What a pain. Trust me, there will never be another submarine in my garage with goop sealed ports. Never.
Vance


-----Original Message-----
From: Recon1st@aol.com
To: personal_submersibles@psubs.org
Sent: Wed, Jul 15, 2009 8:20 pm
Subject: [PSUBS-MAILIST] sikaflex suggestion

I have been looking at sikaflex for my viewports and did not realize the number

of types.

Any suggestions on which one to use?

Dean


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