Originally Posted by Marinautic
No, the correct seal is a fibre type washer. Probably got them on the shelf, I can have a look in the morning if you'd like, then pop a couple in the post to you.
Fibre washers on mine, but just serviced the water pump using Mercury's service kit. I gulped at the price but then found it's actually a complete new water pump, including the shaft seals and the little washers for the gearbox plugs. These are a yellow and blue plastic material. I hope they're ok.
By the way Gareth, thanks for help with the shaft bush thingy. All sorted and refitted.