The Ultimate Guide to PTFE (Xylan) Coated Fasteners: Why Ditch Zinc?

Don't Let Rust Ruin the Rig:

The Ultimate Guide to PTFE (Xylan) Coated Fasteners

Why Smart Engineers are Ditching Standard Zinc for PTFE in Harsh Environments

Author: Alex Lyon (Manager at High Fasteners)

Factory Location: Handan, China

The "Million Dollar" Rust Problem

Let's be honest. We've all seen it: A multi-million dollar pipeline project, looking shiny and new on day one. Six months later? The bolts are bleeding red rust.

It's not just ugly; it's dangerous. And trying to remove a seized, rusty nut on an offshore platform isn't just annoying—it costs a fortune in labor and downtime.

If you are buying standard Galvanized bolts for marine or chemical projects to save a few cents, you are likely losing dollars later. This guide explains why PTFE (Xylan) coating is the "insurance policy" your project needs.

What Exactly is PTFE / Xylan?

You probably have PTFE in your kitchen—it's the non-stick coating on your frying pan (Teflon). Now, imagine applying that industrial-grade toughness to a high-strength bolt (like ASTM A193 B7).

It's not just "paint." It's a functional fluoropolymer coating that does two things exceptionally well:

✓ It fights corrosion like a beast.

✓ It's slippery (Low Friction).

The "Salt Spray" Reality Check

We did the tests so you don't have to. Here is how long different coatings last before showing Red Rust (ASTM B117 test):

Standard Zinc Plated: ~96 Hours (Good for indoor furniture, bad for oil rigs)

Hot Dip Galvanized (HDG): ~500 Hours (Okay for bridges, but threads can be messy)

PTFE / Xylan: 2,000 to 3,000+ Hours 🏆

The Verdict: If your project touches saltwater, chemicals, or extreme humidity, PTFE isn't a luxury; it's a necessity.

The Hidden Killer: Friction & Galling

Here is a scenario: Your installation team is tightening stainless steel bolts. Suddenly, the nut gets stuck. It won't move forward, it won't move back. That's "Galling" (Cold Welding). It's a nightmare.

How High Fasteners' PTFE Solves This:

Because PTFE is naturally "non-stick," it has a very low and consistent coefficient of friction (k-factor).

✓ Easier Installation: You get accurate pre-load (tension) when torqueing.

✓ Easy Removal: Even after 5 years in the middle of the ocean, you can unscrew our PTFE nuts with standard tools. No cutting torches required.

Factory Note: We offer PTFE in Blue, Green, Red, and Yellow. This isn't just for looks—it helps your inspectors identify different bolt grades instantly on-site.

Why Source from "High Fasteners" in Handan?

Many "suppliers" online are just trading companies working from an apartment. We are the factory. Located in Handan (China's fastener capital), we control the process from raw wire to final coating.

The "Zero-Defect" Promise (Optical Sorting)

We know that a bad thread can stop your assembly line. That's why we don't just rely on human eyes.

✓ We invested in Automated Optical Sorting Machines.

✓ Every single bolt goes through a 360° laser scan.

✓ Bad dimensions? Rejected.

✓ Damaged threads? Rejected.

✓ Head cracks? Rejected.

When you open a box from High Fasteners, you get 100% usable product. No surprises.

Ready to Upgrade Your Supply Chain?

Stop overpaying for "brand names" and stop risking safety with low-quality generic parts. Get the factory-direct advantage.

We Specialize in:

✓ Stud Bolts: ASTM A193 B7 / B7M

✓ Heavy Hex Nuts: ASTM A194 2H / 2HM

✓ Coating: Xylan 1070 / 1424 / PTFE

Get a Quick Quote (We reply fast!)

Email: admin@changhua-electrical.com

Website: https://www.highfasteners.com

Factory Add: Yongnian District, Handan City, Hebei, China