Convertible roof. Lubricant for rubber seals needed.

[rfm1952]

I've posted this in the New XK section but thought I'd also try here, as perhaps it is more likely older cars will have needed it more than new ones.

I have recently bought a 20 month old XKR convertible from a main dealer. In the handbook it says that a lubricant should be applied to the rubber seals of the hood especially before winter, which I assume stops them sticking and helps to stop them perishing. It recommends a product called Carbaflo KSP 105 but I've tried 3 dealers and none of them have heard of it or can recommend anything similar. I've Googled it and can find all about it, but has anyone any experience with it or has anyone used anything else which does the same job?
VW recommend Krytox and Audi use Berelub but I don't want to use the wrong thing. I can buy those from the local respective dealers easily enough.
Any help would be appreciated.

Thanks,
Rob