tub and tile caulk

I have used tub and tile caulk to fill some aircraft seams, eg. wing roots, horizontal stabilizers, etc. I've used a small plastic "syringe" type applicator that one can get from one's dentist. Pull the plunger on the applicator and squeeze some caulk into it. Replace the plunger and apply the caulk to the joint. Then, I use damp cotton swabs to remove the excess caulk. Sometimes, the process is repeated due to shrinkage of the caulk. When it's done right, the joint will look much like a recessed panel line. It can be painted when dry. Pull apart the syringe and wash it out with HOT water before the caulk dries. One tube of tub n' tile will last a long, long time. Gary.