Overview
Porosity is normal. Leaks don't have to be.
Almost every casting has tiny pores. When oil, coolant, fuel or air is under pressure, connected pores become a leak path — and a leak means a rejected part or a warranty claim.
Impregnation fills those pores with sealant so the part becomes pressure-tight. Our plant is on site, right next to our machining cell, so parts don't travel to an outside vendor and back.
Process
How it works — in three steps
Vacuum
Parts go into a vacuum chamber. Air and loose particles are pulled out of the surface pores.
Sealant fill
Sealant is forced into the micro-pores under controlled pressure, filling the voids that cause leaks.
Cure & wash
The sealant is cured and excess is washed off. The part passes a final leak test before dispatch.
Why in-house matters
Faster, traceable and cheaper overall
No outsourcing delay
Parts stay on site. Lead time is predictable, with no third-party handling or re-inspection.
Process traceability
Batch, cycle settings and pressure data are logged against each part number.
Quality at source
Defective castings are caught before impregnation — not after shipment.
Lower total cost
No transport risk and no re-inspection cost means a lower landed cost per part.
Typical parts
Where impregnation helps
Failing leak tests?
Send us a trial batch.
We'll impregnate and re-test a sample lot against your leak specification and share the results.