7 Questions I Wish I’d Asked Before Buying Honeywell Rubber Boots, Teflon PFA, and Nitrile Grommets

I’ve been on the buying side of industrial materials for about seven years. In that time, I’ve made enough screw-ups to fill a small warehouse. Some were rookie errors. Some were me being too clever. A few were just bad luck. But almost all of them could have been avoided if I’d asked the right questions up front.

Below are the questions I now ask myself (and my suppliers) every time I order Honeywell rubber boots, Teflon PFA parts, nitrile grommets, or anything that involves material comparisons like TPU vs. rubber cleats. If you’re new to this space — or even if you’re not — these might save you a headache (and a few hundred bucks).

1. Why does my Honeywell rubber boot CT40-RB-00 feel tighter than expected?

Short answer: Because you probably ordered straight from the size chart without checking the actual last width.

I made this mistake in my second year (2018). I needed 120 pairs of CT40-RB-00 for a crew working on a chemical facility. The size chart looked straightforward — order size 10 for a US 10 foot. When the boots arrived, half the guys complained they were too narrow. Turns out the CT40-RB-00 has a standard medium width, but many industrial boots come in wide. I hadn’t specified “wide” because I didn’t know the option existed. Result: 60 boots had to be returned (the distributor charged a 15% restocking fee). Cost me about $450 and delayed the whole PPE rollout by 10 days.

Lesson: Always confirm width availability before you place the PO. If your people are wearing steel-toe shoes all day, they’ll want a wider fit. Ask for the “W” option. (I now include a line in my RFQ: “Please confirm width options for all Honeywell rubber boots.”)

2. Is Teflon PFA the same as standard PTFE for gasket applications?

No, and the difference cost me a $1,200 redo.

Back in early 2021, I ordered Teflon PFA sheets to make gaskets for a high-purity chemical line. I assumed PFA was just a fancier name for PTFE — how different could they be? Well, PFA has a higher melting point (around 305°C vs. PTFE’s 260°C) and much better chemical resistance to strong acids. For our application (hot concentrated nitric acid), PTFE would have failed within weeks. The PFA worked fine. But I had already committed to a batch of PTFE gaskets from a different supplier because I didn’t check the spec. We had to scrap those ($1,200 gone) and rush-order PFA equivalents.

Real talk: If your process involves temperatures above 250°C or aggressive oxidizers, don’t cheap out — go with PFA. For general service, PTFE is usually fine. But never assume they’re interchangeable.

3. Can nitrile rubber grommets really withstand outdoor UV exposure?

Here’s the thing: Nitrile (NBR) has excellent oil and fuel resistance, but UV stability? Not its strong suit.

I learned this when we used nitrile grommets on an outdoor electrical enclosure. Within eight months, the grommets had cracked and hardened. We’d used them because the spec sheet said “excellent weather resistance” — which is true for some formulations, but standard NBR without UV stabilizers isn’t meant for direct sunlight. An informed customer (i.e., a buyer who asks) would know to request “UV-stabilized NBR” or switch to EPDM for outdoor applications.

My advice: Tell your supplier the exact environment (indoor, outdoor, chemical splash, temperature range). Don’t just say “grommets” and expect them to read your mind. I now send a one-page checklist with every grommet order.

4. TPU vs. rubber cleats — which one lasts longer on concrete?

From my experience: TPU (thermoplastic polyurethane) typically outwears rubber by 2–3x on smooth concrete surfaces. But it’s also harder and can be less comfortable on uneven ground.

I had to make this call for a warehouse floor crew (about 50 people). The supplier sent me samples of both. The TPU cleats showed almost no wear after a 2-week test; the rubber ones had visible rounding. But the crew complained that TPU felt “slippery when wet” compared to rubber. So I ended up ordering rubber cleats for the wet areas and TPU for the dry sections. That was a smart call, but it took me a few weeks of back-and-forth to decide. In hindsight, I should have done a controlled walk test with actual workers earlier.

5. My Honeywell thermostat won’t reach set temperature — what should I check first?

Before you call tech support, try this:

• Is the thermostat in a spot that’s warmer or cooler than the rest of the room? (e.g., near a window or a heat register)
• Are the batteries fresh? (A low battery can cause erratic reading, believe it or not.)
• Check the differential setting. Some Honeywell models have an adjustable swing (how many degrees it overshoots before turning off). If it’s set to 1°F, the temperature may hover just below your set point.

I spent three hours troubleshooting a thermostat that turned out to be placed in a drafty hallway. After moving it to a more central location, it worked perfectly. (Ugh.)

6. Why did my Teflon PFA tubing fail under high-frequency vibration?

Because PFA is relatively soft and can fatigue if not properly supported.

I once installed 200 feet of 1/4” PFA tubing in a machine that vibrated constantly. Within a month, cracks appeared at the fittings. The tubing itself was fine, but the constant flexing at the connection points caused stress cracks. The fix? Add vibration-dampening clamps every 12 inches and use a thicker wall tubing (0.062” instead of 0.035”). That was a $300 mistake (scrapping the first batch). Now I always ask: “Does this application involve vibration? If yes, let me spec thicker wall or use PTFE instead.”

7. What’s the fastest way to ruin a batch of nitrile gloves?

Store them near ozone sources — like electric motors or UV lights.

I know, sounds obvious, but I made this error in 2020. We kept a case of Honeywell nitrile gloves next to an industrial fan motor. The ozone generated by the motor degraded the rubber, and the gloves became brittle within weeks. The manufacturer’s storage guidelines say “away from ozone and direct sunlight.” I ignored that line. (Surprise, surprise.) The gloves were still usable for light cleaning, but anyone handling chemicals would have risked a breach. I threw out 3,000 pairs — roughly $400 worth.

Now: I staple a storage reminder card to every PPE shipment we receive. It takes 10 seconds and saves a lot of waste.