+1 on the Yama Bond. They make at least 2 varieties, #4, #5. I've used #4 (gray) for over 30 years and its always worked excellent. Three Bond 1104 is another product that seems to be 99% of what Yama Bond is. Never heard any complaints with that product as well.
Or Honda has there version of grey sealant. They have 2 types of grey. Ht4 - I believe is the less runny type, and hp4 . I prefer the thicker HT 4 . Not sure of the exact differences. Both work good.