Teflon spray (PTFE spray) is a dry-film lubricant. A solvent or water carrier sprays on wet, then flashes off in 5-15 minutes to leave a thin layer of PTFE (polytetrafluoroethylene) bonded to the surface. PTFE has the lowest coefficient of friction of any solid known (around 0.04 against steel) — slipperier than wet ice on wet ice. "Teflon" is the DuPont/Chemours trademark for PTFE; the chemistry is identical. Reach for it on door rollers, sliding tracks, padlocks, table-saw fences, treadmill belts, garage doors, drawer slides and chains where wet lube would trap chips and dust. Don't use it on heavily loaded gears, hot chains over 250 degC, or anywhere a thick load-carrying grease film is the job.
Quick Reference — PTFE Sprays at AIMS
| Product | Type | Temp range | Best for |
|---|---|---|---|
| CRC Dry Glide with PTFE 150g | Dry-film | −40 to +260 degC | Tracks, slides, locks, dusty workshop |
| CRC Power Lube with PTFE 300g | Wet (oil + PTFE) | −18 to +149 degC | Higher load, where wet film is OK |
| CRC Syntha-Tech with PTFE 312g | Synthetic + PTFE | −40 to +232 degC | NSF H1 food-safe, wider temp window |
All three are CRC. Choose the dry-film for clean surfaces and dust-prone environments. Choose the wet versions when there's enough load to push the dry film out of the contact zone.
What Is Teflon Spray?
"Teflon" is the registered trademark of Chemours (formerly DuPont) for a specific type of fluoropolymer: polytetrafluoroethylene, or PTFE. When a tradie says "teflon spray," they mean a PTFE-containing aerosol lubricant. The two terms are interchangeable in normal use, though strictly only Chemours can label a product as "Teflon."
A PTFE spray is built around three things:
- PTFE particles — micron-sized, often suspended in a binder.
- A carrier solvent — typically an isoparaffin, naphtha or water in the case of water-based food-grade variants. The carrier evaporates after spraying.
- A binder or additive package — in "wet" PTFE sprays, this is a refined mineral or synthetic oil that stays on the surface; in dry-film sprays, it's a fast-flashing carrier that leaves only the PTFE behind.
The distinction between "wet" and "dry" PTFE products is the single most important thing on this page. Get it wrong and the lube either drips and traps dust (wet on the wrong job) or wears off in hours (dry on the wrong job). The next section covers it.
Why PTFE? The Lowest-Friction Solid Known
PTFE's coefficient of friction against polished steel sits around 0.04 — comparable to ice on ice. For context, dry steel-on-steel is around 0.6, lubricated bronze on steel about 0.1. PTFE achieves this because the fluorine atoms wrapped around each carbon backbone are tightly held and chemically inert. There's almost nothing for another surface to "grab onto" at a molecular level.
Three useful consequences for industrial use:
- Hydrophobic. Water beads off PTFE-treated surfaces. Useful in damp environments, but not a substitute for proper corrosion inhibitors.
- Chemically inert. PTFE resists most solvents, acids, alkalis and fuels. It doesn't break down in normal industrial chemistry.
- Wide thermal stability. PTFE itself is stable from cryogenic temperatures up to around 260 degC. The carrier or binder usually sets the working temperature limit, not the PTFE.
What PTFE does not do well: carry heavy loads under sliding contact. The film is thin (microns) and once it wears through, you've got dry metal-on-metal. That's why you don't use PTFE spray on gear teeth, heavily loaded bearings, or open chains under shock load. Reach for grease or chain lube instead.
Wet vs Dry PTFE — The Real Trade-Off
This is where forum threads on r/BikeMechanics, r/Tools and the woodworking forums get heated. The short answer:
- Dry-film PTFE (e.g. CRC Dry Glide) sprays wet, flashes off, leaves a non-tacky PTFE deposit. It doesn't drip, it doesn't pick up sawdust the way oil does, and it doesn't stain clothes or timber. The downside: shorter service life. The film is thin and gets worn or washed off faster than a wet lubricant.
- Wet PTFE (e.g. CRC Power Lube) is oil with PTFE particles suspended in it. The oil stays on the surface and carries the PTFE into contact zones. Longer-lasting, better for higher loads — but it stays wet, so it'll attract dust and chips over time.
Forum reality check — dust attraction over time
Marketing copy says "PTFE dry lube won't attract dust." Forum reality from r/BikeMechanics, r/Tools and the woodworking communities is more nuanced. Applied as a thin coat on a clean surface, dry-film PTFE genuinely doesn't trap dust the way oil does — dust sits on the surface and wipes off. But over-applied, or sprayed onto a surface that wasn't degreased first, the residue builds up and starts collecting dust and grit. The fix is technique, not product choice: wipe the surface clean, apply a light even mist, let it dry, then wipe off any excess. Don't keep "topping up" without cleaning first or you'll build a sticky PTFE-and-dust layer that defeats the point.
The bike-chain version of this debate is well-rehearsed: dry lube is clean and quiet but needs reapplication every 100-200 km, particularly after rain. Wet lube lasts longer but turns into a black grinding paste of grit and oil. Real cyclists tend to pick based on weather and how often they're willing to re-lube. Same logic translates to workshop applications: dry for clean environments and frequent service; wet for higher load or set-and-forget.
PTFE Spray vs Silicone Spray vs Grease vs Oil — When Each Wins
| Lubricant | Strengths | Weaknesses | Pick it when… |
|---|---|---|---|
| PTFE dry | Low friction, dust-rejecting, won't stain, won't migrate | Short life, low load capacity, needs clean surface | Dusty environment, sliding surfaces, visible surfaces (no drip) |
| Silicone spray | Works on plastic and rubber, water-repellent, wide temp range, cheap | Contaminates paint surfaces, can interfere with welding/painting | Rubber seals, plastic on plastic, marine, weather-sealing |
| Lithium grease | High load, long service, sticks where you put it | Collects dust badly, messy, can wash out in wet | Bearings, gears, garage door hinges, heavy load applications |
| Penetrating oil (WD-40 / RP7) | Frees seized parts, displaces water, cheap | Not really a lubricant — evaporates and leaves little film | Freeing rusted bolts, displacing moisture, cleaning |
| Chain lube | Sticks under shock and centrifugal load, anti-fling | Wet, dirty, traps debris | Roller chains, conveyor chains, motorcycle chains |
Where PTFE Spray Actually Earns Its Keep
1. Sliding door tracks and roller doors
Top use case. The rollers carry a low to moderate load, the track is exposed to dust, and any wet lube ends up coating the door, the floor and your clothes. Dry-film PTFE leaves a slippery non-staining surface that lasts months in a clean environment. Reapply when you notice the door starting to chatter.
2. Treadmill decks — but only if the manual allows it
Important — check your treadmill manual first
Most modern treadmills specifically call for 100% pure silicone on the deck, not PTFE. Using the wrong lubricant can void your warranty and damage the belt or motor. DuPont historically listed treadmills as a valid application for PTFE products, but the manufacturer's instructions override everything. Spirit, Lifefitness, Sole and most home brands explicitly specify silicone. If the manual says silicone, use silicone — CRC's 808 Silicone Spray is the go-to.
3. Bike chains — wet, dry or wax, depending on conditions
PTFE dry lube on a bike chain is fast, clean and quiet when applied properly to a fully degreased chain. Forum experience says expect 150-200 km in dry conditions, dropping to 80-100 km if it rains. Heavy rain will wash it off. For wet-weather riding, wet PTFE or a dedicated wet chain lube outlasts dry PTFE by a wide margin — at the cost of a black, oily chain.
4. Table saw rails, fences and mitre slots
This is where dry-film PTFE genuinely excels. Sawdust will gum up any wet lube within hours. The slick PTFE coating lets fence rails slide freely without grabbing dust. Same logic for drill press tables, bandsaw rip fences and router lift columns. Clean the surface first with a degreaser, apply a light mist, wipe off the excess after a minute.
5. Padlocks and lock mechanisms
Modern locksmith consensus has shifted from graphite to PTFE for most padlocks and pin-tumbler locks. The reasoning: graphite is fantastic dry, but mixes with any oil or moisture into a sticky grey paste that gums up wafers. PTFE stays slippery, repels water, and won't react with traces of old oil. The exception: a lock that already has graphite in it. Don't squirt PTFE in on top — the carrier will turn the graphite into mud. Service the lock properly first (compressed air, isopropyl flush) then dose with PTFE.
6. Garage door rollers, hinges and tracks
CRC and similar brands make a dedicated "Garage Door Lube" — typically a hybrid wet PTFE designed for the load on roller spindles plus the dust exposure of an outdoor opening. Plain dry-film PTFE works for tracks (low load); for the actual roller bearings, a wet PTFE or a light grease is better.
7. Lawn mower decks (food-safe variants only if near produce)
A dry PTFE coating on the underside of a mower deck reduces grass buildup. Apply to a clean deck (scrape first), then let it dry fully before mowing. For ride-on commercial mowers, this can shave maintenance time noticeably. Use a food-grade NSF H1 variant (CRC Syntha-Tech) if you're contracting on schools, food processing yards or anywhere overspray could contact produce.
8. Drawer slides, hinges and light pivots
The classic "squeaky door" use case. PTFE dry lube on a quick spray nozzle is cleaner than oil, less likely to bleed onto clothes, and lasts long enough for a domestic job. For high-cycle commercial cabinetry, a wet PTFE will last longer between services.
What NOT to Use Teflon Spray On — Failure Modes from the Forums
Don't use PTFE spray on:
- Heavy chain drives under load — motorbike chains, conveyor chains, drive chains. PTFE film tears through too fast. Use proper chain lube.
- Loaded gears — gearboxes, open spur gears. Needs the load-carrying film of grease or gear oil.
- High temperature applications above ~260 degC — PTFE itself decomposes at high heat and (importantly) the fumes are toxic. Don't spray near welding or grinding work in progress.
- Welding clamps, weld tables and surfaces being painted — like silicone, PTFE residue can interfere with paint adhesion and weld quality. Use a dedicated anti-spatter for welding.
- Anywhere a thick load-carrying film is needed — large bearings, gear couplings, kingpins, suspension joints. Wrong tool.
- On top of existing graphite in locks. Clean the lock first, then re-lubricate.
- Plastic and rubber components without checking — most PTFE sprays are plastic-safe but some carriers can attack ABS, polycarbonate or natural rubber. Spot-test in a hidden area first.
Food-Grade PTFE — When NSF H1 Actually Matters
NSF H1 is a registration from the National Sanitation Foundation for lubricants approved for "incidental food contact." It applies in food processing, brewery, dairy, abattoir and packaging plant environments where a lube could conceivably end up in or on food.
CRC Syntha-Tech with PTFE 312g is the AIMS workhorse food-grade PTFE — NSF H1 registered, useful −40 to +232 degC, suitable for incidental contact. Reach for it on:
- Food packaging machinery (conveyors, slicers, fillers)
- Dairy and beverage processing lines
- Abattoir and meat processing equipment
- Pharmaceutical clean environments
For workshop use where no food contact is possible, the regular CRC Dry Glide or Power Lube is fine and cheaper. NSF H1 is not "safer" or "cleaner" — it's specifically certified for an environment most workshops aren't in.
Application Technique — How the Pros Actually Use It
- Clean first. PTFE bonds to clean surfaces. Spraying over old grease or grime traps it under the new coating. Use a degreaser, wipe dry.
- Shake the can hard. 30 seconds minimum. PTFE particles settle. If you can hear the agitator ball moving freely, keep shaking another 10 seconds.
- Spray light, even passes. 200-300mm from the surface, sweeping motion. Don't dwell — you'll get runs and build-up.
- Let it flash off. 5-15 minutes for the carrier to fully evaporate. If you actuate the mechanism while it's still wet, you'll drag the carrier into bearings where it doesn't belong.
- Wipe off excess. A clean lint-free cloth across the surface picks up over-spray and any unbonded PTFE. This prevents the dust-attraction issue.
- Test movement. Cycle the mechanism a few times. Add more only if needed. Less is more with PTFE.
Brands at AIMS Industrial
AIMS stocks the CRC range — the recognised industrial-grade choice in Australian workshops. The three PTFE sprays cover the dry-film, wet and food-grade applications between them:
- CRC Aerosol Dry Glide With PTFE 150g — Pure dry-film PTFE. The default choice for tracks, locks, slides and any surface where you don't want a wet residue.
- CRC Aerosol Power Lube With PTFE 300g — Wet PTFE with anti-wear additives. Higher load capacity. Use where dry film won't last and a wet residue is acceptable.
- CRC Syntha-Tech Lubricant With PTFE 312g — Synthetic PTFE blend, NSF H1 registered, wider temperature window. The pick for food, dairy and pharma environments.
For non-PTFE workshop lubrication needs we also stock the broader CRC silicone, food-grade silicone, lithium and moly grease, and anti-seize ranges.
AIMS Industrial Range — Related Products
- Penetrating & Other Lubricants — full range including PTFE, silicone and dry films
- Silicone Spray — the silicone alternative when rubber, plastic or extreme cold is in play
- Greases — lithium, moly, multipurpose for heavier load applications
- Anti-Seize Compounds — for fasteners and thread protection
- Degreasers — clean surfaces before lubricating
- CRC Brand Collection — full CRC chemical range stocked at AIMS
- All Lubrication products — every lube AIMS carries
Further reading from AIMS
- Industrial Lubricants Guide — when each lubricant type wins
- Moly Grease Guide — high-load alternative when PTFE isn't enough
- Oil Viscosity Chart — picking the right oil grade
- Industrial Degreaser Guide — clean before you lubricate
- Bearing Maintenance Guide — why PTFE spray is the wrong call here
FAQ — Teflon Spray
What's the difference between Teflon spray and PTFE spray?
None in terms of chemistry. "Teflon" is the Chemours (formerly DuPont) brand name for polytetrafluoroethylene (PTFE). When someone says "teflon spray" in a workshop, they mean a PTFE-containing aerosol lubricant. Strictly speaking, only Chemours-licensed products can be labelled "Teflon," so most aerosols are sold as "PTFE spray" or "with PTFE."
Is dry-film PTFE really better than wet PTFE?
Better for different things. Dry-film leaves a non-tacky coating that doesn't trap dust or drip — ideal for sliding surfaces, tracks, locks and anywhere a wet residue is unwanted. Wet PTFE lasts longer under higher loads because the oil carries the PTFE into contact zones and stays put. Pick dry for clean environments and frequent service, wet for higher load or where you can't easily re-apply.
Does PTFE spray really attract dust?
Not when applied correctly — a thin, even coat on a clean surface leaves a slick film that dust slides off rather than sticks to. The dust-attraction reputation comes from over-application: keep spraying without cleaning first and the residue builds up into a gummy layer that does collect grit. The fix is technique. Clean the surface, apply a light mist, let it dry, then wipe off any excess.
Can I use Teflon spray on my bike chain?
Yes, but with the right expectations. Dry PTFE bike lubes work well for clean, dry conditions but typically last only 100-200 km before needing reapplication, dropping further in wet weather. For wet rides or chains exposed to road grit, a wet chain lube or wet PTFE blend outlasts dry PTFE by several times — at the cost of a dirty chain. Reddit cycling forums have run this debate for years; the honest answer is "depends on weather and how often you'll re-lube."
Can I use PTFE spray to lubricate my treadmill belt?
Check your treadmill manual first. Most home and commercial treadmills specifically call for 100% pure silicone, not PTFE. Using the wrong product can void the warranty and damage the belt or drive motor. If silicone is specified, use silicone (CRC 808 Silicone Spray). PTFE is only appropriate where the manufacturer explicitly allows it.
Is Teflon spray safe on rubber and plastic?
Most are, but not all. The PTFE itself is inert to almost everything, but the carrier solvent can attack certain plastics (ABS, polycarbonate) and natural rubber. Always spot-test in a hidden area first if you're unsure. CRC Dry Glide and Syntha-Tech are both considered plastic-safe in normal use, but a quick test on the back of a hinge or a non-critical surface is cheap insurance.
Is PTFE spray better than graphite for padlocks?
For most modern padlocks, yes — and it's the current locksmith consensus. Graphite works dry but turns into a sticky paste if it ever meets oil, water or other lubricants. PTFE stays slippery, repels water, and won't react with traces of other lubes. The exception: a lock already loaded with graphite. Service it (compressed air, isopropyl flush) before squirting in PTFE, otherwise the carrier liquefies the graphite into mud.
What temperature can Teflon spray handle?
PTFE itself is stable from cryogenic up to about 260 degC. The carrier or oil binder usually limits the working range first. CRC Dry Glide is rated −40 to +260 degC. CRC Syntha-Tech goes −40 to +232 degC. Above these, the lubricant breaks down and (importantly) the PTFE fumes are harmful — never spray near welding, grinding sparks or naked flame.
What's NSF H1 and when do I need it?
NSF H1 is a certification from the National Sanitation Foundation for lubricants approved for "incidental food contact." Required in food processing, dairy, brewery, abattoir, pharmaceutical and packaging environments where lubricant could conceivably reach food or product. For general workshop use it's not necessary — regular industrial PTFE spray is fine and cheaper.
Can I use PTFE spray on door hinges?
Yes — one of the cleaner choices for the job. Cleaner than oil (won't drip onto floors or clothes), longer-lasting than WD-40 (which isn't really a lubricant anyway), and won't attract dust in a normal indoor environment. Wipe the hinge clean first, apply a light mist, cycle the door a few times. Reapply every 6-12 months on a moderately used door.
How long does Teflon spray last?
Depends on load, environment and reapplication frequency. On low-load applications in clean environments (drawer slides, door hinges, lock mechanisms), 6-12 months is realistic. On medium-load applications (table saw fences, garage door tracks), 2-4 weeks before reapplication is more typical. On high-cycle production machinery, weekly. If you're applying it weekly to a high-load job, you're probably using the wrong lubricant — try a wet PTFE or a grease.
Will PTFE spray work in cold weather?
Yes — PTFE itself is stable to cryogenic temperatures and most PTFE sprays are rated to around −40 degC. This makes them useful for cold-store equipment, refrigeration unit hinges, and walk-in freezer door rollers. Silicone spray works at similar temperatures, but where you specifically want low friction in addition to cold tolerance, PTFE wins.
Can I use PTFE spray instead of WD-40?
Different jobs. WD-40 is a water-displacing penetrating fluid — it frees rusted threads, displaces moisture, cleans residues, but evaporates off quickly and leaves only a token film. PTFE spray is a genuine lubricant — it leaves a persistent low-friction coating. Use WD-40 to free up a stuck mechanism; use PTFE spray to keep it sliding freely afterwards.
Why does my PTFE spray leave a white residue?
Over-application. PTFE is white — visible deposits mean you've sprayed too much. The fix: wipe down with a clean cloth and a light pass with degreaser if needed, then apply much less next time. Light, even passes from 200-300mm away with no dwelling on any one spot.
Can I use Teflon spray on threads to lubricate fasteners?
You can but it's not the best choice. PTFE works on threads, but for repeated assembly or high-temperature applications (exhaust manifolds, stainless on stainless to prevent galling) a dedicated anti-seize compound is far better. PTFE-tape on pipe threads is a different application — a sealing tape, not a sprayable lubricant. See our Thread Locking & Sealing Guide for the right product per job.
Need help picking the right lubricant? Call AIMS Industrial on (02) 9773 0122 or contact us. We stock the full CRC range and a few decades of workshop experience to go with it.