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Apprentice answer

Can a round pipe hanger be too tight

2nd YearRound, Spiral & Flat Oval DuctCheck first

A split ring should cradle round duct, not squeeze it oval. Loosen and reset the support so the duct keeps its shape.

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Plain-English answer

Overtightening a ring hanger can ovalize round duct, crush double-wall insulation, and create airflow/acoustic problems.

Back off the ring, inspect the shell, verify insulation is not crushed, and reset the support with the approved snug fit. Replace damaged sections if the duct no longer holds shape.

Ask Foreman

The split ring at [location] is squeezing the round duct out of shape. I checked the shell/insulation. Do you want it reset or the damaged section replaced?

Verify before acting

Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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