Duct Sealer Selection

Spec calls for sealant. Confirm mastic, UL tape, or gasket for this pressure class and application?

I'm checking duct sealer selection at [location]. I found bucket of white compound, foil tape, or caulk. Spec calls for sealant. Confirm mastic, UL tape, or gasket for this pressure class and application?

Sealing, Leakage, Mastic & Pressure Testing 1st Year YELLOW

Stop if

Hold point on duct sealer selection: I have the location, photo, drawing/detail, and what was checked. Who should verify before this gets cut, covered, lifted, sealed, energized, or signed off?

Watch out

Don't use cloth duct tape. Don't use mastic as sole sealant on high-pressure. Don't guess based on last job.

Check

room/grid/area
photo of condition
drawing/detail
manufacturer/model if visible
what I already checked

Say this to your foreman

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