I'm a materials procurement specialist handling DuPont orders for 6 years. I've personally made 11 significant mistakes—totaling roughly $18,000 in wasted budget and delays. After the third rejection in Q1 2024, I created our pre-check checklist. Here are the 5 steps that now save us time and money.

When to Use This Checklist

This is for anyone specifying, ordering, or substituting DuPont materials: engineers, maintenance teams, and MRO buyers. If you're working with DuPont brands like Teflon™ coatings, Zytel™ nylon, or silicone products—or even evaluating common polymers like polypropylene—this checklist helps you catch errors before they cost you.

Use it every time you:

  • Order a DuPont Teflon coating spray for a new application
  • Source nylon components (like fittings for a nylon hammock frame)
  • Review silicone materials (e.g., for a silicone broom handle grip)
  • Ask yourself: is polypropylene (PP) safe for this use?

Takes about 10 minutes. Could save you 5 days of rework.

Step 1: Verify the Exact Product Grade

DuPont doesn't sell one "generic Teflon"—they have dozens of grades. I once ordered a PTFE spray for high-temp oven parts and got a general-purpose grade. The coating failed at 260°C. We didn't catch it until the parts were coated and tested. That error cost $890 in redo plus a 1-week delay.

Checklist:

  • Confirm the specific grade (e.g., Teflon™ PTFE 30B vs. Teflon™ PFA 340).
  • Request the technical data sheet (TDS) and compare temperature, chemical resistance, and adhesion.
  • If the application is food contact or medical, verify FDA/USP compliance—DuPont publishes these lists on dupont.com.

Oh, and don't assume "spray" means the same as liquid coating. I've made that mistake too.

Step 2: Check Material Compatibility (Especially for Nylon and PP)

People think polypropylene is safe for everything because it's used in food containers. Actually, PP has poor UV resistance and degrades under sunlight. If you're making a nylon hammock—which is usually polyester or nylon, not PP—mixing up materials is common. I once got a quote for nylon webbing and the supplier substituted polypropylene to save $0.05/meter. Three months later the hammock straps snapped under load. $450 wasted + embarrassment.

Checklist:

  • Identify the operating environment (UV, moisture, chemicals, temperature).
  • For nylon hammock applications: nylon (polyamide) has high tensile strength and UV resistance; PP is cheaper but weaker and UV-sensitive. Use a material selection chart (DuPont's Crastin® or Zytel® guides).
  • For silicone broom handles: silicone is great for heat resistance but not for abrasive wear. Check if the broom head needs polypropylene bristles instead.

Step 3: Confirm Application Method for Coatings

I'm not a chemist, so I can't speak to the molecular bonding. What I can tell you from a procurement perspective is that DuPont Teflon coating spray requires proper surface preparation and curing. We once used a spray can on uncleaned aluminum. The coating peeled off after two weeks. $320 down the drain.

Checklist:

  • Ask the supplier: is this a spray-on, brush-on, or dip-coat product?
  • Get the curing instructions: temperature, time, and required ventilation.
  • If you're outsourcing the coating, verify the coater's process meets DuPont specifications. DuPont publishes approved applicator lists on their site.

Let me rephrase that: don't assume your local shop can apply it correctly. We learned that the hard way.

Step 4: Validate Regulatory and Safety Claims

Per DuPont's official guidelines (dupont.com), products like Teflon™ coatings may contain PFOA in certain legacy grades. Newer grades are PFOA-free, but you need to verify. When someone asks me "is polypropylene safe?" the answer is: safe for what? PP is approved for food contact by FDA (21 CFR 177.1520), but not for high-temperature autoclaving. I should add that PP can leach additives if recycled improperly.

Checklist:

  • Request the Safety Data Sheet (SDS) and any regulatory certifications (FDA, NSF, UL).
  • For silicone broom handles: check if silicone is food-grade if used in kitchen brooms. Standard silicone may contain fillers.
  • For nylon hammock webbing: ensure it meets ASTM D6779 for load-bearing applications.

Step 5: Document Everything with Date-Stamped Records

I once ordered 500 units of a DuPont brand part based on a verbal recommendation. Six months later we needed to reorder, but the specification had changed—nobody remembered the exact grade. We had to reverse-engineer it. That cost $1,200 in testing and delay.

Checklist:

  • Keep a log with: product name, grade, lot number, supplier, date ordered, and application.
  • Attach the TDS and SDS to each purchase order in your system.
  • For custom parts (e.g., molded silicone broom grips), retain a sample and the material certificate.

The 12-point checklist I created after my third mistake has saved us an estimated $8,000 in potential rework. Seriously—5 minutes of verification beats 5 days of correction.

Common Mistakes and Final Warnings

  • Don't trust supplier substitutions without checking compatibility. A cheaper substitute might not be a direct equivalent.
  • Avoid assuming all DuPont products are premium. Some are commodity grades; some are engineered. Know the difference.
  • Remember: polypropylene is safe for most cold water applications but not for hot or UV-exposed uses. Always verify the temperature range.

If your project involves nylon hammock hardware, silicone broom parts, or DuPont Teflon coating spray, run through this checklist before placing the order. It's a no-brainer.