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Silicon Seals

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Silicon Seals

Posted by stuart_munroe at September 02. 2017

on the rocker inspection cover on my ES2 a cork washer is used to seal after adjustment. Due to continued dribbles I've started to double up on them. However they soon crush and deteriorate. I have some silicon sheet used to seal gas boiler burners - would this be a better alternative?

Re: Silicon Seals

Posted by mark_woodward at September 02. 2017

I use commercially-made silicon gaskets on my Commando rocker covers. I also used some obtained from RGM some years ago on the gearbox inner and outer covers during a rebuild. None of them have ever leaked and, with care, can be re-used. The rocker gaskets are about 1mm thick.

Re: Silicon Seals

Posted by Barry Carson at September 02. 2017

i had a constant leak as i thought from my rocker inspection cover gasket. turned out to be the rocker spindles leaking beetween the cover and the spindle. the oil used to blow around the gasket and down the back of the push rod tubes giving the impression it was the inspection cover gasket leaking.

 

 

 

 

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Re: Silicon Seals

Posted by ian_soady at September 02. 2017

I have a sheet of 1mm Viton that I got from ebay and it's excellent for making seals like that. It was only a couple of quid or so.

The advantage of Viton is that it's resistant to fuel (not that you should have any there) and heat.

Re: Silicon Seals

Posted by john_holmes at September 02. 2017

I also use silcone seals plus on the rocker covers and no leaks. 

Re: Silicon Seals

Posted by stuart_munroe at September 02. 2017

Thanks Barry that may be the answer. Thanks also to you all i  will make up some silicon ones to try too.

Re: Silicon Seals

Posted by john_evans1 at September 03. 2017

A sheet of cork makes any inspection cover gaskets I need. The paper original was useless but the cork has never leaked.

Re: Silicon Seals

Posted by Colin Peterson at September 04. 2017

The paper original is indeed useless, I've had the same silicon gaskets on my rocker covers since about 2002 and they're still good ...

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