Description
WD-40 Multifunction 400ml with Flexible Straw
WD-40 Penetrant is a fast-acting penetrant with capillary action to penetrate deep into crevices, threads and seams to break the rust bonds that hold stuck parts together.
It is a low odor formula that works on contact to free rusted nuts, bolts, threads, locks, and chains leaving behind a protective layer that prevents rust and corrosion from re-forming.
Now the job is even easier with our proprietary 8” flexible straw that bends and keeps its shape, allowing unlimited access to hard-to-reach places.
- Temperature application range: -50 to +150 °C
5-in-1 product:
- Rust Remover
- Lubricant
- Contact spray
- Cleaner
- Corrosion protection
Characteristics
- Penetrates rust to free up stuck, frozen, or seized equipment and parts
- Safe to use on metal, rubber and plastic parts
- Ideal for use on nuts, bolts, threads and locks
- 50-state VOC compliant
- Fast-acting/Works on contact
- Low Odor
- 8-Inch Flexible Straw gets into hard-to-reach spaces
- No Prop 65 Chemicals
- Works faster and goes further than the leading competitor
- Silicone and chlorinated solvent free
- Non-conductive
Field of application
- Nuts
- Bolts
- Pipe Threads
- Locks
- Chains
- Rusted Parts
- Stuck Components
Technical specifications
- Boiling point (initial): 221°C (430°F)
- Density: Not Determined
- Solubility in water: Insoluble
- pH: Not Applicable
- Vapor pressure: 2.03mmHg @ 20°C (Petroleum Solvent)
- Vapor density: 5.3 (Petroleum Solvent)
- Percent volatile: >80%
- VOC: 24.51%
- Coefficient of water/oil distribution: Not Determined
- Appearance/odor: Clear liquid with a characteristic odor.
- Flashpoint: 64°C (147°F) (CC ASTM D3828)
- Flammable limits: LEL: 0.6% UEL: 5.6%
Hazard Statements (CLP)

Signal word: Danger.
Hazard Statements (H-codes)
- H336: May cause drowsiness or dizziness.
- H222: Extremely flammable aerosol.
- H229: Pressurized container: May burst if heated.
Precautionary Statements (P-codes)
Prevention:
- P101: If medical advice is needed, have product container or label at hand.
- P102: Keep out of reach of children.
- P210: Keep away from heat, hot surfaces, sparks, open flames, and other ignition sources. No smoking.
- P211: Do not spray on an open flame or other ignition source.
- P251: Do not pierce or burn, even after use.
- P261: Avoid breathing vapor or aerosol.
- P271: Use only outdoors or in well-ventilated areas.
Response:
- P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
- P312: Call a POISON CENTER/doctor if you feel unwell.
- P331: Do NOT induce vomiting.
Storage:
- P405: Store locked up.
- P410+P412: Protect from sunlight. Do not expose to temperatures exceeding 50 °C.
Disposal:
- P501: Dispose of contents/container in accordance with local regulations.
Additional Labeling (EUH-codes)
- EUH066: Repeated exposure may cause skin dryness or cracking.
Storage and Disposal
- Store in a cool, well-ventilated place.
- Dispose of in compliance with local regulations.
WD-40 Company Limited Zweigniederlassung Deutschland, Siemensstrasse 21, 61352 Bad Homburg, GERMANY, +49 6172 677 450, [email protected], www.wd40.de






Lena –
The quality pleasantly surprised me. Not too big, not too small, just perfect.
Laurent –
Durable product. Great customer support. Very satisfactory. Met my expectations.
Marine –
I’ve been using it for 2 weeks and I already see results! Super fast delivery, thank you.
Océane J. –
I noticed the difference right away! Very effective, I noticed a change in just a week. Excellent product, worth every cent. Surprisingly good quality for the price.
Gabriel E. –
Practical and useful. Fast and secure delivery. Very easy to set up.
Fabio S. –
Easy to assemble. Works great. Excellent product. Product as expected.
Carter P. –
Arrived as promised. Just as it should be. Exactly what I was looking for. Very fast shipping.
Margaux –
Very effective; noticed a change after just one week. Great product, worth every cent. A friend recommended it to me and I’m thrilled with the purchase.
isabella.xo –
No unpleasant smell; I really like that.
nora.ber –
Pleasant to use at home. Easy to use, without making a mess.
klara_s –
A friend recommended it and I’m so glad I ordered. Pleasant to use at home. Surprisingly good quality for the price. Really noticed a difference after using it!
valeria88 –
Better than anything I’ve tried before.
vincent_fr –
Very satisfied with the purchase. Great purchase, thank you. Top seller. Everything as expected.
Florence L. –
Packaging was slightly damaged, but product is excellent. Packaging was slightly damaged, but the product is excellent. I noticed the difference right away! Great product, worth every cent.
lotta_ma –
I was skeptical, but now I’ll order it regularly. Easy to use, without making a mess.