Robber seal reviver
 

Ok, not a 75/ZT but relevant nonetheless due to vintage of vehicles.


My daughter has a mini cooper convertible and the seal where the leading edge of the soft-top bit meets above the windscreen is leaking ever so slightly at 1 corner. There is a rubber seal that runs the width where the 2 meet and I'm wondering its its gone a bit hard and not as effective as it once was. Considering the seal costs nigh on £250, I thought I'd ask if anyone has any positive experience of a rubber reviver, ( one that makes it soft again ) and if so which one.
TIA
Bap

I have found that Aerospace 303, or 303 Protectant ...or whatever they want to call themselves in different markets does a good job of keeping (silicone) rubber supple over an extended period.
Cleaning the rubber with IPA and following up with a rub down with a fine grit sandpaper will help before applying the 303.
Hope this helps.

but what about restoring suppleness?

macafee2

India pale ale! I’d rather drink it 🤣🤣

i tried a product called Risoline seal restorer or similar name to restore a crank seal which it did really well .
Had a bit left over and rubbed it on a bit of old rubber i had and i was inpressed how it softened it up and swelled it up a little.Might be good !!

A 50/50 mixture of wintergreen oil and rubbing alcohol works wonders to renew the old hardened rubber carburetor mounting boots (isolators) on 20+ year old motorcycles. Soak overnight - not sure how to apply in your application.

Cheers,
Glenn

thank you for the suggestions chaps, will investigate and weigh up the costs, Id never heard of rislene but they do all manner of stuff, quite pricey though.

When I had my Celica a few years ago, I was recommended a product called GummiPflege to restore the rubber seals to cure leaks on the pillar less doors and the sunroof. It worked well, made the seals softer and did in fact cure all the leaks.

I am told it was developed by BMW to condition the seals on their convertible roofs but not sure how true that is, it definitely seems to be german.

I am planning to get some more to try and cure the leaky boot seals on the ZT, could have done with doing it last week though, it's rained, just a little bit in the last few days.

hood seals
 

you could try olive oil, it has always worked for me in the past on door rubbers etc but use good olive oil. hope this helps,

Virgin? Hard to find in these parts today.