Spiral duct is out of round and the coupling will not seat
Spiral, Round Duct & Couplingsyellow
Do not crush the spiral to make it fit. Check roundness, damage, coupling depth, alignment, and whether the piece can be re-rounded or needs replacement.
Field checklist
- Measure/check the round shape at several points.
- Inspect for dents from staging/shipping.
- Confirm coupling size and insertion depth.
- Try only approved re-rounding/edge correction if your foreman allows.
- Ask whether to re-round, replace, or use a different fitting.
Ask foreman
The spiral at [location] is out of round and the coupling will not seat. Do you want me to try re-rounding it, adjust support/alignment, or pull a new piece?
Do not
Do not smash the pipe oval, beat the coupling on, or seal a rocked connection.
Why it matters
A round connection needs mechanical fit-up first. Sealant cannot fix a crushed/rocking coupling.
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