Lubricant Spray (WD-40)
Aerosol lubricant sprays like WD-40 are completely banned from both carry-on and checked baggage.
Carry-on
Not allowed
Checked
Not allowed
Carry-on details
Not allowed. Aerosol lubricant sprays such as WD-40 are flammable and banned from carry-on entirely, regardless of container size — this is a full hazmat prohibition, not a liquids-limit issue.
Checked-bag details
Not allowed. The same flammable-aerosol ban applies to checked baggage.
Special instructions
Non-aerosol liquid lubricants in a squeeze bottle may be treated differently — check the product's specific label and flammability rating, or simply buy lubricant at your destination.
FAQ
- Can I pack a small can of WD-40 in checked luggage?
- No. Aerosol lubricant sprays like WD-40 are banned from both carry-on and checked baggage in any size because they're flammable.
Related items
Source: FAA — PackSafe (Hazardous Materials) · Last verified: 2026-08-02
Final decision rests with the security officer at the checkpoint.