Static field route #317

What do I do when smearing mastic over bad mechanical connection?

Sealing, Leakage, Mastic & Pressure Testing.1 field-polished — seal/test detail check

Mastic does not fix bad metal fit-up. Fix the joint, gasket, fasteners, or alignment first, then seal.

Field checklist

This connection is not mechanically tight. Do you want it fixed before I put mastic on it?

Do not use mastic like glue to hold together bad sheet metal.

Bad fit-up can leak, move, and crack the seal later.

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