Morris Minor Owners Club

I have just removed the access panel that covers gearbox/chassis legs. It is sealed using a grey putty like substance (presumably supplied on a roll). To me it looks like a product called Arboseal. Have any other members used anything similar?

3M do a product available in strips, well at least they did. I suppose you could use kiddies plasticine that also comes in strips. Try asking in a body repair shop if you're stuck