sealant question - in the long 1 and 1/2 ft thin aluminum "sausage " type container
You have a 20 oz. sausage tube.
What you need is 2 empty 10.5 oz tube (the normal size everyone knows) with a screw off tip. The ones I have are DAP silicone tubes.
Unscrew tip on 10.5.
Insert something, I use a 12 inch long bolt, push plunger out the bottom of the tube.
Clean tube if needed. I use a long margins trowel. I'm a tile installer by trade so I have these laying around.
Cut off end of sausage and squirt into 10.5 tube through the big hole end.
As you fill the 10.5 tube, tap the small hole end on the ground to get contents to settle.
Fill tube to top. Put plunger back in, this will force some sealant out small hole.
Screw tip back in. Repeat.
I have done this for years with tile mastic that comes out of a 3 1/2 gallon bucket. I use a putty knife to shovel the mastic into the tube.