PTFE coating
PTFE Sapucaia: the company’s own fluoropolymer line, applied by spray with oven cure. From the fastener to large equipment.
It is the company’s own fluoropolymer line — not a licensed third-party product. The practical difference for the specifier is not in declared performance: it is in control. When the formulation is the company’s own, thickness, color and finish are adjusted to the component without depending on another manufacturer’s data sheet. PTFE delivers what a fluoropolymer delivers: low, predictable friction, chemical inertness and a barrier against the working fluid. What it does not deliver is galvanic protection — a barrier protects while the film is intact, and a scratch that reaches the steel has nothing defending it. That is why, in oil and gas, the critical specification usually asks for both: a metallic base of zinc-nickel or NanoGalv® and a fluoropolymer finish on top, in a combined system. In that system, over a zinc-nickel base of 8 to 15 µm, the assembly records over 3,500 h in salt spray — an external laboratory test commissioned by Sapucaia.
Equipment painting. Spray application takes the line from the part that fits on a rack or in a barrel to the assembled unit: valve body, structure, equipment that arrives by truck and does not go into a bath. It is the same coating, the same cure, another scale of handling — and it is the case where the fluoropolymer is usually specified alone, with no metallic base, because the part is not a fastener and the requirement is a chemical barrier, not thread protection.
For the complete system over a metallic base, with the test numbers and the class designation, the page is zinc-nickel with PTFE.
Whoever is looking for the Xylan® line, from PPG, has its own page: Xylan® / PPG. They are different things — Xylan® is a third-party product that Sapucaia is approved to apply; PTFE Sapucaia is the company’s own. The choice between the two is made by the end customer’s specification.
Note: The layer and the reference standard for this line are defined with our sales team, according to the component and your end customer’s requirement. Over a zinc-nickel base of 8 to 15 µm, the system records over 3,500 h in salt spray, in an external-laboratory test commissioned by Sapucaia.
Technical data
- Chemistry
- Fluoropolymer (PTFE), own line
- Application
- Spray, with oven cure
- Scale
- From the fastener to large equipment
- Function
- Low, predictable friction · chemical inertness · barrier
- Over a metallic base
- Zinc-nickel or NanoGalv®, in a combined system
The applications that come here.
Equipment and structure
Assembled units that fit neither a rack nor a barrel, coated by spray in the same process as the fastener.
Finish over a metallic layer
Top layer over zinc-nickel or NanoGalv® when the specification calls for galvanic protection and an organic barrier on the same component.
Component in contact with fluid
Where the requirement is chemical inertness against production or control fluid, not thread protection.
In a combined system, performance does not add up — it multiplies.
| Metallic base | Organic layer | Salt spray | Remarks |
|---|---|---|---|
| Zinc-nickel | PTFE Sapucaia | over 3,500 h independent external laboratory | The best-selling oil and gas system in the line. Tested at an independent external laboratory contracted by Sapucaia. |
What specifiers usually ask.
What is the difference between PTFE Sapucaia and Xylan®?
The origin of the product. Xylan® is from PPG (formerly Whitford), and Sapucaia is approved by PPG to apply the line — the Xylan® test numbers come from the manufacturer’s data sheet. PTFE Sapucaia is the company’s own line. For the project, the choice usually comes from the end customer’s specification: when it names Xylan®, we apply Xylan®; when it asks for a fluoropolymer without naming a brand, the own line meets it with the same process.
Does PTFE replace the metallic coating?
In some cases, and in oil and gas usually not. The fluoropolymer is a barrier: it protects while the film is intact. The metallic layer is sacrificial galvanic protection, and it keeps protecting the steel at a point where the layer has been damaged. That is why a critical specification usually asks for both, as a system.
Do you paint equipment, not only fasteners?
Yes. Application is by spray with oven cure, so the limit is not the rack or the barrel: it is the oven and handling. Assembled units, valve bodies and structure are all in scope. Send the technical drawing and the coating standard and our sales team replies on whether we meet that part.