DC gates fitting help needed

[Eduard Nemirovsky]

I am debating how to fix 4" dust gate inside 4" metal pipe. It is a some play for my taste ( about 2-3 mm). I can put a few rounds of tape, or will use some waterproofing material from HD or
How to keep agates in place?
And can I drill a holes thru the pipe and gate side and screw it? What to use - metal screw?, bolts?
Thank you, Ed.

[Greg Portland]

I would wrap the gate end in duct tape so the fit is snug. For attachment, use metal screws.

[Chris Padilla]

Eduard,

Some pictures of your setup would help. My answer would depend on what your gate looks like but it is likely to follow Greg's advice.

[Eduard Nemirovsky]

I am using aluminum gates and metal piping from PennIndustry.

Ed.

[Philip Rodriquez]

I predrilled and use 1/4 sheet metal screws. When I was done, I just caulked it.

[David Hostetler]

Sheet metal screws to fix the pipe to the gate, clear silicone sealant in a thin bead on the OUTSIDE of the joint to seal it.

[Eduard Nemirovsky]

Thank you guys, I know it's suppose to be this way - metal screws and caulking, but in last minute I start worry about cracking gate's body with drilling
Ed.