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Rubber bungs / seals

ukjules

ukjules

Forum Sage
I just wondered if anyone knows where you can get the rubber bungs specifically the ones that go on the starter motor and hold the power cable ?

The picture describes better than I can explain it
 

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This is why this site is so damned good.....
Thanks for info , I've never heard of rtv but have now and will try this. (On this bung that is on the starter motor area where cable goes in)

The only issue is the bung is rock hard rubber and split into 3 parts.

Also what are us GS people to do when parts just can't be mended ?
I say this regarding another thread about a starter motor for my bike. I fixed it again but when I can no longer fix it what do we do ?
I have been unable to find one for my bike..... Anywhere bar cmsnl for 850£.

(One thing I will try as I have a Yamaha RD 250, and there is a site there that sells absolutely everything you could ever need down to bungs for that bike. I'll see if I can get similar)
We need a sites like that for our GS bikes
 

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I have had old time Harley guys say the soak shrunk rubber parts in lighter fluid and it swells them up. MAay be another way to snug it up.
 
I used to use a chemical to make rubber flexible again. Can't remember the name but begins with 'O'

In the end I simply put in Suzuki GS rubber bungs in Google....
I recall in the past I modified these bungs to fit.
 

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Come on jules lets remember that "O" chemical, it may be a big help for the rubber carb boots so many folks have trouble with.
 
Ok I'm found what I used ... and I had limited results but while it was flexible I got hoses / air ducts on.

I used Xylene. (Not beginning with 'o' as I thought .
Below is what they say about it on the net.

Xylene acts as a powerful solvent that causes old, vulcanized hard rubber to swell and open its microscopic pores. However, using xylene by itself will not permanently restore or soften old rubber; it evaporates quickly and can leave the material brittle or prone to further damage once it dries.

Effects of Xylene on Hard Rubber
    • Swelling: Causes the rubber matrix to expand as the solvent penetrates the material.
    • Opening Pores: Relaxes the tight, aged structure, which allows other conditioning oils to enter.
    • Temporary Softening: Makes the rubber pliable only while saturated; original hardness returns upon complete evaporation.
    • Degradation Risk: Can reduce structural strength and lead to cracking or surface breakdown if overexposed.

Restoration Context
Most users agree that xylene is most effective when mixed with a plasticizer like oil of wintergreen (methyl salicylate). In these DIY mixtures (often a ratio of 70% xylene to 30% wintergreen oil), xylene functions as the carrier solvent that opens the rubber pores so the wintergreen oil can deeply penetrate and permanently replace lost natural oils.
 
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