Superior Fluoropolymer Coatings for fasteners
We regularly supply Teflon Coated Bolt and nuts ASTM A-193 and B7 Studs Teflon Blue.
Polytetrafluoroethylene (PTFE) coating, commonly known as Teflon®, is a high-performance fluoropolymer coating renowned for its exceptional chemical stability, thermal resistance, and non-stick properties.
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene, and has numerous applications because it is chemically inert. The commonly known brand name of PTFE-based composition is Teflon by Chemours, a spin-off from DuPont, which originally invented the compound in 1938.
Teflon Coating is actually the same as PTFE coating,and it is a synthetic fluoropolymer coating for owest coefficient of friction and anti-rust/anti-corrosion/Corrosion Resistance purpose.
PTFE coatings have the lowest coefficient of friction & highest temperature resistance at 500°F and a melting point of 627°F. They also offer good abrasion & chemical resistance and can be applied to aluminum, carbon steel and stainless steel.
PTFE Coating Process:
- Cleaning: Parts are cleaned to remove all oil, grease & other substances. Cast parts are de-gassed.
- Pretreatment: Parts are pretreated to ensure proper adhesion.
- Material Preperation: Teflon® is rolled at 30 rpm for 30 minutes to ensure the coating has been adequately mixed.
- Application: The coating is sprayed onto the item either manually or on one our automated production lines.
- Cure / Bake: Depending on the coating used the part is cured in an oven at a temperature from 320°F to 815°F.
- Inspection: Parts are inspected to ensure proper application
Character of PTFE Coating
| Coating Type | Non-Stick | Chemical Resistance | Abrasion Protection | Corrosion Protection | Service Temperature | Coefficient of Friction |
| PTFE Coating | Best | Good | Average | Average | 500°F | 0.12 – 0.15 |
Properties of PTFE coating
- Non-Stick Surface:
- High Temperature Resistance: Withstands temperatures up to 260°C (500°F) and short-term exposure to 327°C (melting point), ensuring stability in demanding environments16.
- Chemical Inertness: Resists acids, alkalis, solvents, and corrosive chemicals,
- Low Friction Coefficient:
Materials available for PTFE-Coated Studs Bolts:
🔹 B7/B7M (ASTM A193) with PTFE Coating – Used in high-temperature, high-pressure applications.
🔹 B8 / B8M (Stainless Steel 304/316) with PTFE Coating – (marine, chemical plants).
🔹 B16 (ASTM A193) with PTFE Coating – Suitable for high-pressure, high-temperature service in oil & gas.
Want to learn more about PTFE Coated stud bolt?
How to select the mostsuitable PTFE coating material for your applications.
Learn more about Xylan specifications? Xylan Coating Material Selections.
