BIWA BW18 Rust Remover with MoS2 penetrating oil for seized screws 400 ml
€4.59
- Loosens seized screws, bolts and nuts
- MoS2 provides a long-term effect according to the manufacturer
- Prevents screw connections from seizing again
- 400 ml spray can, spraying distance 20 to 30 cm
- 14 days right of withdrawal
- Expert advice: 02831 9167703 Mon–Thu 9–16, Fri 9–12 (CET)
- Specialist dealer in Kevelaer, Lower Rhine
Description
BIWA BW18 is a solvent-based rust remover with MoS2 for seized, rusted screw connections. The spray creeps under the rust, loosens screws, bolts and nuts and leaves molybdenum disulphide behind as a solid lubricant, which according to Birtel provides a long-term effect and prevents the connection from seizing again. The 400 ml spray can is aimed at vehicle workshops, metalworkers and DIY users.
Benefits at a glance
- Loosens seized, rusted connections: creeps under rust on screws, bolts and nuts.
- Lubricates after loosening: MoS2 remains behind as a solid lubricant, for which Birtel states a long-term effect.
- Prevents seizing again: treated screw connections stay free-moving for longer.
- Targeted application: spraying distance 20 to 30 cm, soaking time a few minutes.
- Long shelf life: 24 months unopened at -5 °C to +30 °C.
Areas of application
- Vehicle workshops: seized exhaust, brake and suspension bolts
- Metalworking and locksmithing: corroded bolt and nut connections
- Agriculture: bolts on machinery and attachments
- Home and yard: rusted hinges, locks and turnbuckles
- Assembly: screw connections that are to be loosened again later
Limits & notes
The rust remover does not remove surface rust and does not convert it. If a rusty surface is to be treated further or coated, a rust converter or an anti-rust primer is the right choice. The spray must not get onto brake discs and brake pads, because the lubricating film reduces braking performance. Cover painted surfaces and plastics before spraying; the solvent content is 583 g/l.
Hazard statements: Danger. Extremely flammable aerosol. Pressurised container: May burst if heated. Safety data sheet available from the manufacturer.
Application & tips
Shake the can before use and spray the connection from a distance of 20 to 30 cm. Allow to soak in for a few minutes before you loosen the screw; for heavily rusted parts, repeat the process. Solvent-based, flammable: use only with good ventilation, away from ignition sources; wear safety goggles and solvent-resistant gloves (nitrile). Do not spray towards open flames or other ignition sources, do not smoke. Do not pierce or burn the container, even after use. Protect from direct sunlight and do not expose to temperatures above 50 °C. Stored unopened at -5 °C to +30 °C, the shelf life is 24 months.
Technical data
| Content: | 400 ml |
|---|---|
| Pack size: | 400 ml spray can |
| Technical data | |
|---|---|
| Active substance: | MoS2 (molybdenum disulphide) |
| Density: | 0.817 kg/l at 20 °C |
| Colour: | colourless according to specification |
| Solvent content: | 583 g/l (84 % VOC) |
| Explosive limits: | 1.5 to 10.9 vol. % (propellant) |
| Application | |
| Spraying distance: | approx. 20 to 30 cm |
| Contact time: | a few minutes, repeat for heavy rust |
| Storage | |
| Storage temperature: | -5 °C to +30 °C |
| Shelf life: | 24 months unopened |
| Storage class: | 2B |
| Transport | |
| Dangerous goods: | UN 1950, Class 2 |
| Use | |
| Merchandise group: | Tools, painting supplies & protective equipment |
| Origin | |
| Country of origin: | Slovenia |
| Product type: | Rust remover / penetrating oil |
| Product group: | Technical sprays & lubricants |
Frequently asked questions
How long must the rust remover soak in?
A few minutes before you loosen the connection. For heavily rusted parts, repeat the process.
What is the MoS2 in the spray for?
Molybdenum disulphide remains behind as a solid lubricant after the solvent has evaporated. Birtel states a long-term effect for it and gives preventing screw connections from seizing as its purpose.
From what distance do I spray?
Spray onto the connection from a distance of about 20 to 30 cm.
How long does the can last?
24 months, guaranteed only in the unopened original packaging at a storage temperature of -5 °C to +30 °C.
May I use the spray in enclosed rooms?
Only with good ventilation. It is an extremely flammable aerosol, so keep it away from ignition sources and do not smoke.
Manufacturer information
Manufacturer information pursuant to Art. 19 EU GPSR
Postal address
Birtel KG
Noswendeler Str. 7a
66687 Wadern
Germany
Electronic address
info@birtelkg.de
Phone: +49 6871 922440
Information as of: 2026-09-18
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