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What do I do when not protecting gasket from rain/dust before install?

Rectangular Duct Assembly: TDC / Ductmate / FlangesPolished core starter — connector/detail check

Fix the gasket condition before bolting/sealing: not protecting gasket from rain/dust before install. The gasket needs clean contact and continuity at the flange/corners.

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In Rectangular Duct Assembly: TDC / Ductmate / Flanges, I’m looking at: What do I do when not protecting gasket from rain/dust before install? What should I verify before I cut, drill, seal, cover, move, or install?

Do not

Do not bolt over dirty, wet, folded, missing, or displaced gasket.

Why it matters

Project specs/submittals, manufacturer connector instructions, shop standard, foreman direction, and approved flange detail.

Search words: tdc ductmate flange material care