Because it is an aerosol spray. When sprayed, the product forms a fine mist that can ignite easily if it comes into contact with a flame or spark. Tests show that: The spray can ignite from a long distance. It contains enough energy to burn quickly once ignited for safety reasons, regulations require products with these properties to be labelled as “extremely flammable aerosols”, even if the liquid itself is not highly flammable when not sprayed. That’s why it must be kept away from heat, sparks, and open flames.

Is it suitable for electrical components?

Yes — but only when the power is turned off. The product does not conduct electricity and can safely be used around electrical components once they are disconnected from power. For safety reasons, never spray it on live or powered?on electrical equipment.

Is it safe on plastic, rubber?

The product is safe to use on most plastics and rubber materials. Some sensitive plastics, such as polycarbonate or polystyrene, may react if the product is left on the surface for a long time. Certain rubbers may also swell with prolonged contact. To be safe, we recommend testing the product on a small area first and avoiding extended contact on sensitive materials.

Is it safe to use indoor?

Yes, the product can be used indoors. It carries the EU Ecolabel, which means it meets strict environmental criteria and contains only limited amounts of hazardous substances. When using it indoors, make sure the area is well ventilated and keep it away from open flames, as the aerosol is flammable.

What is “bio”? What does 85% bio based mean? What’s it made of?

When we say “bio”, we don’t mean organic farming. In this case, “bio” means bio-based. That means the product is made mostly from renewable natural sources, like plants or other natural materials, instead of being made entirely from fossil fuels like oil. If a product is 85% bio-based, it means that most of the material comes from renewable sources, with a small part still coming from conventional materials. This definition follows official EU rules used for eco-labelled products.

Does "bio-based“ mean that the formula is biodegradable?

Does bio-based mean biodegradable? Not always — but for this product, yes. More than 95% of its ingredients break down quickly in the environment. It is EU Ecolabel certified, which means it meets very strict environmental standards. So while “bio-based” alone doesn’t always mean biodegradable, this product is designed to be both — renewable and environmentally responsible.

Is this product food grade approved? What NSF Registration does it have?

No.This product is not intended for use where it could come into contact with food. It is registered as NSF H2, which means it can be used in industrial or food-processing environments, but only in areas where food contact cannot occur.If a product is needed for situations where food contact is possible, a different type of lubricant (NSF H1) would be required.

Is it non-conductive?

Yes. The product is non-conductive, which means it does not conduct electricity. It has insulating properties and has been tested to safely withstand high electrical voltage. This makes it suitable for use in applications where electrical safety is important.

Can I use it in high-temperature applications like engines?

No. This product is not made for engines or very high-temperature parts. It’s intended for general maintenance and everyday lubrication, not for engine internals or parts that get extremely hot. Using it in engines could reduce performance or cause damage. For engines, always use a lubricant specifically designed and approved for high temperatures.

What’s Ecolabel? What's so special?

The EU Ecolabel is an official European label that helps people identify products that are better for the environment. It means that: The product has been checked by independent experts It meets strict environmental standards Its impact is considered across its whole life cycle, from materials to disposal

Is the product recyclable?

Please avoid releasing any unused product into the environment. Both product residues and the empty container should be disposed of at appropriate collection points in accordance with local recycling and waste?disposal guidelines.

On what materials is this product not compatible with?

WD-40 SPECIALIST® Bio Lubricant Multi-Use can be used on metal surfaces and is generally compatible with most plastics and rubbers. Because materials and surfaces can differ, we recommend testing the product on a small area first before applying it more widely.

Can I use it on garden tools and outdoor furniture?

Yes, it can be used on garden tools and outdoor furniture.The product helps protect against rust and corrosion and is biodegradable. It also carries the EU Ecolabel, which means it meets strict environmental standards. Simply wipe off any excess product after use to keep surfaces clean and prevent dirt build-up.

When should I use a white lithium grease?

WD-40 Specialist® White Lithium Grease is a viscous, non-drip formula, ideal for metal-on-metal applications, and is suitable for high pressure, heavy loads. Additionally, WD-40 Specialist White Lithium Grease provides corrosion protection, and is durable and long-lasting.

When was WD-40 Multi-Use Product first made?

WD-40® Multi-Use-Product was first made in 1953.

Will WD-40 Multi-Use Product damage car paint?

WD-40® Multi-Use Product has been tested on many types of paint on various surfaces with no effect. Although WD-40 Multi-Use Product can be used on a variety of surfaces we recommend testing in an inconspicuous area before larger application. Wax polishes and certain wax coatings may be softened by WD-40 Multi-Use Product.

When should I use a Silicone Lubricant?

Use WD-40 Specialist® Silicone Lubricant when you need a lubricant that's clear, non-staining, and safe for most rubbers and plastics. This lubricant provides brilliant performance across a wide temperature range and offers excellent moisture resistance.

Where can I buy WD-40 Multi-Use Product?

WD-40® Multi-Use Product is available almost everywhere. It can be found in many countries in automotive, convenience, discount, drug, grocery, hardware, and home center stores. It's also available from leading distributors all over the world.

Will WD-40 Multi-Use Product damage paint?

WD-40® Multi-Use Product has been tested on many types of paint on various surfaces with no effect. Although WD-40 Multi-Use Product can be used on a variety of surfaces we recommend testing in an inconspicuous area before larger application. Wax polishes and certain wax coatings may be softened by WD-40 Multi-Use Product.

Why can't I empty all the product in my aerosol can?

Given that product "evacuation" issues, which occur when some product remains trapped inside a can and cannot be sprayed, are prevalent in the aerosol industry, they can impact the production of certain products. If you encounter difficulties with an aerosol can not spraying, we suggest following this concise troubleshooting guide: Shake the can vigorously. Turn the opening of the aerosol valve to the blue mark on the crown of the can. Hold the can vertically and not at an angle. If you're unable to get a result, contact us and we'll send you a replacement.

When using WD-40 Specialist Bike Degreaser on my bike chain, should I rinse with water afterwards?

With the WD-40 Specialist® Bike Degreaser it is really up to how dirty the components are. The formula itself is fast evaporating and leaves no visible residue. So if it's not too dirty then just spray liberally and use a cloth to collect the dirty liquid, there is no need to use water. If the chain is severely dirty and greasy then it is a very good idea to rinse with water to help ensure that all of the dirty liquid is removed. In some cases you may need to reapply the degreaser to remove all of the previous dirt and greasy grime. Always remember that the WD-40 Specialist Bike Degreaser leaves no residue and therefore is not a corrosion inhibitor. To protect the chain, relubricate with a chain lube or apply a corrosion inhibitor like WD-40® Multi-Use-Product for storage.

Will WD-40 Multi-Use Product remove rust?

WD-40® Multi-Use Product helps remove rust by breaking down the bonds between metal and rust. Spray the rusted surface with WD-40 Multi-Use Product, enough to thoroughly soak the area. Allow it sit for up to 10 minutes. Clean the rusted item with a wire brush. With the rust loosened, the brush should clean away most of the corrosion. Brush the surface until you’re satisfied you removed most of the rust and wipe any remaining residue. End by spraying with WD-40 Multi-Use Product to protect the surfaces from future rust.

Who invented WD-40 Multi-Use Product?

Norman Larsen and The Rocket Chemical Company

What was WD-40 Multi-Use Product originally made for?

WD-40® Multi-Use-Product was first used to protect the outer skin of the Atlas Missile from rust and corrosion.

What does WD-40 Multi-Use-Product contain?

Although the exact components of WD-40® Multi-Use Product are not disclosed, WD-40 Multi-Use Product does not contain silicone, kerosene, water, graphite, chlorofluorocarbons (CFCs), or indeed fish oil as is commonly misreported. By providing a list of substances that are not present in its formulation, WD-40 Company assures consumers that it prioritises safety, effectiveness, and environmental consciousness. This transparency allows individuals to make informed decisions when selecting a versatile and reliable product for various applications.

When should I use a degreaser?

Use a degreaser product to quickly remove grease, oil, dirt, tar and more.

Is WD-40 Multi-Use Product conductive?

No, WD-40® Multi-Use Product is non-conductive and has a dielectric strength of 38 000V per 2.5mm which basically means that you would require more than 38 000V per 2.5mm of space between two metal contacts for electrical breakdown/conductance to occur. However, we don't advise you to use our Multi-Use-Product on an energised circuit. Our aerosol can and flexible straw are metal (conduct electricity) and could brush up against a contact. We always recommend disconnecting power, spraying, allowing sufficient ventilation and then reconnecting power.

Is WD-40 Multi-Use Product a degreaser?

WD-40® Multi-Use Product is not a degreaser - it is a lubricant, water-displacer, and removes and prevents rust and corrosion.

What is WD-40 Multi-Use Product used for?

WD-40® Multi-Use Product has over 2000 uses covering a variety of subjects and industries including home, garden and automotive.

Is WD-40 Multi-Use Product good for bicycle chains?

WD-40® Multi-Use Product is safe to be used on your bicycle chain and is great for displacing water on your chain after washing/cleaning, although we recommend using WD-40 Specialist® BIKE for more targeted lubrication on your bicycle as these products are specifically designed for your bike.

What should I use to degrease bare metal prior to painting?

You can use the WD-40 Specialist® Degreaser on bar metal prior to painting as it leaves no visible residue. Just let the product properly dry before you paint the metal.

Is WD-40 Specialist Degreaser safe to use on matte painted alloys?

WD-40 Specialist® Degreaser is an industrial degreaser that is for use on bare metals only, and should not be used on painted or coated surfaces, plastic, or rubber.

What does WD-40 Multi-Use Product do?

WD-40® Multi-Use Product fulfils the following basic functions: 1. LUBRICATES: The product's lubricating ingredients are widely dispersed and tenaciously held to all moving parts. 2. PENETRATES: WD-40 Multi-Use Product loosens rust-to-metal bonds and frees stuck, seized, or rusted metal parts. 3. PROTECTS: The product protects metal surfaces with corrosion-resistant ingredients to shield against moisture and other corrosive elements. 4. DISPLACES MOISTURE: Because it displaces moisture, WD-40 Multi-Use Product quickly dries out electrical systems to eliminate moisture-induced short circuits.

Is WD-40 Multi-Use Product a lubricant?

Yes. While the “W-D” in WD-40 stands for Water Displacement, WD-40® Multi-Use Product is a unique, special blend of lubricants. The product’s formulation also contains anti-corrosion agents and ingredients for penetration and water displacement.

What does 'WD-40' stand for?

WD-40' literally stands for Water Displacement, 40th formula. That's the name straight out of the lab book used by the chemist who developed the product back in 1953. The chemist, Norm Larsen, was attempting to concoct a formula to prevent corrosion—a task which is done by displacing water. Norm's persistence paid off when he perfected the formula on his 40th try.

Is WD-40 Multi-Use-Product safe to use on electrical voltages as a moisture repellent with circuits energised?

Our Multi-Use-Product is designed to displace moisture and has a dielectric strength of 38 000V per 2.5mm which basically means that you would require more than 38 000V per 2.5mm of space between two metal contacts for electrical breakdown/conductance to occur. However, we don't advise you to use our Multi-Use-Product on an energised circuit. Our aerosol can and flexible straw are metal (conduct electricity) and could brush up against a contact. We always recommend disconnecting power, spraying, allowing sufficient ventilation and then reconnecting power.

What is WD-40 Specialist Bike ?

WD-40 Specialist® Bike is a high-performance line of bicycle care products developed via collaboration between WD-40 Company scientists, professional bike mechanics and independent bicycle retailers. The WD-40 Specialist Bike line was designed for maintenance-minded cycling enthusiasts.

What is WD-40 Specialist?

WD-40 Specialist® is a line of specialized products designed to meet the unique needs of professionals and DIY enthusiasts. These products are formulated with advanced technology to provide enhanced performance in a variety of applications. Whether it's lubricating tools and machinery, protecting against rust and corrosion, or loosening stuck or frozen parts, WD-40 Specialist has a solution for every job. With a wide range of products including lubricants, degreasers, and penetrants, WD-40 Specialist is the go-to brand for those who expect nothing but the best.

What can I use on the moving parts, catches, locks on my doors and windows?

Using WD-40 Multi-Use Product as a penetrant to release stuck window hinges and to displace water after washing is a great use of our product. For light lubrication especially of locks and catches, you can use WD-40 Multi-Use Product, but for the more specialist user we suggest applying the following after MUP. For light hinges and rails use WD-40 Specialist Silicone (or Specialist Dry PTFE) as it is great at eliminating sticking and binding. Make sure to wipe up any over spray though as we don't want it getting onto any curtains. For heavier windows and ratchet systems use WD-40 Specialist White Lithium Grease The above two options (Silicone and WLG) would be more than sufficient for any window lubrication and corrosion protection. If you know that a particular window rail, hinge or ratchet will be subject to extreme conditions and are worried about corrosion and seizing then Specialist Spray Grease with the added WD-40 formula would be the one to use for corrosion protection but these situations are unlikely to occur. If you are spraying near a painted surface, be mindful that WD-40® Multi-Use Product may cause stains. We also advise you to contact the manufacturer of the door or windows to ensure using products on them doesn't affect your warranty! Just remember, you should make sure to clean out all the grime to give our greases a fair chance to work and wipe off any excess MUP before applying our greases. Small amounts of MUP left won't affect the performance of our greases. The important thing is to apply our greases to a clean surface with no grime or older grease.

What can I use to release stuck door hinges?

You can use WD-40® Multi-Use Product to release stuck door hinges. Our original product is great for lubrication and to keep moving parts moving! However, if you are spraying near a painted surface, be mindful that WD-40 Multi-Use Product may cause stains. We also advise you to contact the manufacturer of the door or windows to ensure using products on them doesn't effect your warranty!

What can I use to release stuck window hinges and runners?

You can use WD-40® Multi-Use Product to release stuck window hinges and runners. Our original product is great for lubrication and to keep moving parts moving! However, if you are spraying near a painted surface, be mindful that WD-40 Multi-Use Product may cause stains. We also advise you to contact the manufacturer of the door or windows to ensure using products on them doesn't effect your warranty!

When should I use a Penetrant?

Use WD-40 Specialist® Penetrant Spray to quickly loosen and remove seized, corroded, bound, and rusted nuts, bolts, clips, locks, etc.

When should I use a contact cleaner?

Use WD-40 Specialist® Contact Cleaner Spray when you need to clean the metal electrical contact points in sensitive electronics and electrical equipment, including larger electric motors, armatures, relays, electric panels, and generators. It is safe to use on most plastics, rubber and metal when used as directed - cleans oil, dirt, flux residue and condensation without leaving residue behind. When using, keep the following advice in mind: To prevent any accidental damage always check the manufacturer’s instructions before applying product to device. Do not spray into cavities, openings, gaps or areas of your device where this product does not have sufficient airflow to assist full evaporation. Shake can well and isolate all power, allowing hot surfaces to cool. Tilt surface while cleaning to allow any excess liquid to run off and ensure product is completely dry before restoring power.

How long does WD-40 Multi-Use Product last after application?

While this may vary depending on the application, WD-40® Multi-Use Product remains effective even after it appears to dry. The corrosion and rust protection ingredients remain adhered to the surface. External conditions may require additional applications of the product for maximum protection.

How is the WD-40 Specialist line of products different from the original WD-40 Multi-Use Product?

The WD-40 Specialist® product line is an extension of the WD-40 brand. WD-40 Company realizes that sometimes tough jobs require products designed for specific applications (i.e., high-performing specialty lubricants, penetrants, rust removers, etc.) and WD-40 Specialist is formulated for maximum performance to help workers get specific tasks done with ease.

How long is the shelf life of WD-40 Multi-Use Product?

WD-40® Multi-Use Product is a product of persistent nature which is designed and manufactured to a high degree of specifications. The product should continue to perform as expected for an almost indefinite period of time. However, actual performance is affected by the longevity of mechanical items such as the valve assembly on aerosol cans. As such, the shelf life is considered to be 5 years from the date of production; however, product will often dispense and perform as expected for considerably longer. WD-40 Multi-Use Product should be stored at the temperature recommended in the MSDS.

How was WD-40 Multi-Use Product invented?

It was invented when a small company call Rocket Chemical Company set out to create a line of rust prevention solvents and degreasers for use in the Aerospace industry.

Do your products stop wood or laminate floor squeaking?

Unfortunately, we do not have any products to fix this!

Can WD-40 Multi-Use Product be used to clean a toilet?

WD-40® Multi-Use Product is not a toilet cleaner and should never be used for this purpose.

Can you spray WD-40 Multi-Use Product on brake calipers?

WD-40® Multi-Use Product can be used to protect metal brake components while in storage and to assist in dismantling brake assemblies and seized callipers. WD-40 Multi-Use Product should not be sprayed on brakes or any components that require friction.

Can WD-40 Multi-Use Product be used on plastic?

WD-40® Multi-Use Product has been tested on various surfaces and materials with successful results. Although WD-40 Multi-Use Product can be used on a variety of surfaces we recommend testing in an inconspicuous area before larger application. The following plastics were immersed in WD-40 Multi-Use Product for 168 hours with no visible effects: • Polyethylene • Formica • Epoxy • Delrin • Polypropylene • Acrylic • VinylTeflon • Polyester • Nylon Clear polycarbonate and polystyrene may stress craze or crack in contact with the product. Please see the material compatibility section in our TDS for WD-40 Multi-Use Product which is available on our website.