Why did the gasket get shaved off a spiral slip joint?

Field answer

Factory-gasketed spiral systems depend on that seal staying intact inside the joint. A raw field-cut edge can shave the gasket before anybody sees the problem.

Do not rely on the joint just because it slid together. Pull it back, deburr/chamfer the cut edge, replace the damaged gasket, use approved lubricant if required, and verify full engagement before fastening.

What to check first

• Check if the pipe edge was field-cut and left sharp.
• Pull the joint apart if the gasket may have rolled or shaved.
• Deburr and smooth the inside edge.
• Replace damaged gasket material, do not reuse it.
• Confirm insertion depth and fasteners after reassembly.

Why it matters

A damaged hidden gasket can leak badly while the outside of the joint looks finished.

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Final direction belongs to the foreman, approved drawings/specs, manufacturer instructions, pressure/material schedule, employer policy, and AHJ/code requirements.