I've read these, and several other, threads before posting:
P-Series Clutch Seals
PX Clutch Side Oil Seal...
I know this has been kicked around a lot before, but this is not about 'what to fit' or 'how to fit', it's about finding what I want to fit, which is a 'Viton', rubber-edged 31x62.1x5.8/4.3, with Loctite 603; it's what I did in my engine now, which is still going strong.
Older engines, in my case this '81 P150X casing I'm playing with, need a rubber edged clutch-side crank case oil seal. We also want 'Viton', as extra protection against modern fuels.
I do actually still have two Rolf, brown 'Viton', rubber-edged 31x62.1x5.8/4.3 seals in my little spares stock, but I'd like to source more before I use them. I've already checked Rolf (Gapi), and Corteco (Corteco have it in NBR not FPM, which we know – the blue ones):
Option 1). I don't like Beedspeed; haven't used them for a few years, since they repeatedly let me down after Alan Beedham retired and sold up to Johnny Entrepreneur. They do seem to have them, but close-up of the image shows manufacturer as Gufero, who I haven't heard of; has anyone else used Gufero? That's here:
Option 2). ScooterCentre have a listing, for 'Piaggio' FPM/FKM 31x62.1x5.8/4.3 seals. 'Viton' is a DuPont trade name for FPMFKM; I checked. But, bless 'em, the image shows a rubber-edged seal, but the listing lists engines for which a metal edged seal would be correct (those without the groove that causes the problems). I've messaged SC for clarification, and had a reply from either the tea boy or cleaning lady all about rear hub seals (something got lost in translation) so I've tried again, and am waiting for a better reply. Here's that link (see 3rd image):
Option 3. Ask this forum:
Anyone heard of Gufero?
Anyone got any other sources (UK/Europe) for 'Viton' (FPM/FKM) Rubber-edged 31x62.1x5.8/4.3 seals?