Researching for which sealant to use on "pre '68 Dave" 's water pump adapter, I came across this interesting product comparison
YouTube Sealant Test

Interested in how your favourite stacks up here smile

For me, at least per the video, the one that stood out for having the most uniform cure was the Toyota product.
On the Chevy? Is that sacrilege? grin


'51 Chevy 3100 Truck - OEM 216 Engine; three speed column shift transmission
6 Bolt disc conversion with dual master/vacuum booster
12V alternator conversion.
235 engine in waiting grin