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Tool Talk Discussion Forum

What is a silicon sleeve

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DaveK

04-08-2008 12:01:25




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I have a Sears air compressor (919.152920) that was leaking at both ends of the tube that connects the compressor outlet to the regulator/pressure switch inlet. It appears to be an "o" ring type material surrounded by garden hose gasket type material. (Part CAC1369 on the blowup diagram).
They are called "silicon sleeves" on the parts call out and I have been unable to find them anywhere so I finally ordered them from Sears.
They seem to slip over the tube, which has a slight flair (much less than a regular flair fitting) and a packing gland type nut tightens up against the back.
My question is are there any tricks to installing these things? Torques, sealants, magic spells? It looks like it just slips over the end and the whole thing tightens up against the seat of the fitting in the regulator body.
The ones I am replacing had what I would call premature failure. This belonged to my neighbor who did not use it much at all. He couldn't get it to hold air so he bought a big upright unit and gave me this one. Fixing these leaks is step 1
As always, thanks in advance for any advice.

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kidbob

04-09-2008 08:02:27




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 Re: What is a silicon sleeve in reply to DaveK, 04-08-2008 12:01:25  
I think you are talking about the type of sleeve I sell for many fuel and oil lines on engines.
I stock them in sizes from 1/16 to 1". They look like a short piece of hose but it is all one piece, some one may have added an O'ring.
The reason for silicon is for higher tempetures.



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IH2444

04-08-2008 13:19:09




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 Re: What is a silicon sleeve in reply to DaveK, 04-08-2008 12:01:25  
I think just make sure the area the sleeve fits in is clean, etc and install it. I would not over torque it as silicone is pretty soft and you might just squeeze it out. But how much torque ???

On instructions...
I put an oil pan gasket on my Subaru per Subaru factory service manual. Even used a 1/4 inch drive torque wrench and genuine subaru gasket, peened the bolt holes and check the pan for flat, etc.
sucker leaks like a stuck pig. I will do it my way the next time :) It won't leak.

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Bob

04-08-2008 14:57:18




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 Re: What is a silicon sleeve in reply to IH2444, 04-08-2008 13:19:09  
You posted "But how much torque ???".

The units I have worked on had the fittings engineered so that they "bottom out" when tight, so nospecial attention is required, other than not to "strip" the fitting.



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Bob

04-08-2008 12:20:21




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 Re: What is a silicon sleeve in reply to DaveK, 04-08-2008 12:01:25  
They are just a sleeve of red silicion rubber, aren't they? (I don't recall them being made of two types of material... perhaps someone was in there before you, and stuffed something else in there as an attempt to stop a leak?)



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