Needed to caulk around the new cooktop where it meets up with the benchtop. Didn’t need a full 300 gram tube of gap-filling sealant & I also lack a caulking gun. So I tried a different approach, a 170 gram aerosol-type tube of the goop. Crack the locking tab, remove the tip cover, twist the head around to the maximum flow setting & try on an inconspicuous part of the job. It came out a bit thickly so I dialled back the flow rate & this worked well. Minimal cleanup since I’d applied masking tape to the benchtop. Smoothed the result with a wet finger then removed the masking tape after five minutes. Now anything splashed on the bench won’t make its way under the edge of the cooktop.
The old cooktop had a rim of aluminium flashing to do this job.