Surface Finish · Coatings & Painting

PTFE Coating (Teflon)

The slippery armor: fluoropolymer for low friction, non-stick release and chemical inertness.

Process specifications

Parameter	Value
Process group	Coatings & Painting
Coating thickness	15–35 µm
Tolerance impact	Adds roughly the coating thickness per surface (15–35 µm) after grit-blast pretreatment, which itself slightly roughens the substrate. Mask toleranced fits or include coating allowance in the program — specify the finish at quote time.
Corrosion rating	Excellent — the fluoropolymer is chemically inert to nearly all acids, bases and solvents; barrier protection depends on a pinhole-free coat, so thickness class matters for immersion service.
Appearance	Matte black, gray or green-gray depending on the system; a uniform low-sheen industrial look that hides the machined texture.

⚠ Not suitable for

Continuous service above 260 °C — PTFE degrades and releases harmful fumes beyond its rated limit; strongly abrasive environments (the soft fluoropolymer wears through quickly — use hard chrome or hardcoat); high contact-pressure bearing surfaces where the coating cold-flows; surfaces that must later be painted or bonded (nothing sticks to it — that is the point).