Rustbuster Bor-X Anti-Flash Rust Inhibitor

Rustbuster Bor‑X is a high‑performance, water‑soluble corrosion inhibitor designed to prevent flash rusting and staining in metalworking fluids. Developed specifically for use by fluid formulators, Bor‑X integrates easily into semi‑synthetic and fully synthetic metalworking fluid systems.

Bor‑X is particularly effective on ferrous materials, where it delivers reliable short‑term corrosion protection during machining, handling, and interim storage between process stages.

Key Benefits

• Helps prevent flash rusting and staining on ferrous metals
• Suitable for multi‑metal machining environments
• Easily incorporated into semi‑synthetic and fully synthetic formulations
• Flexible treat rates allow optimisation of performance vs cost
• Supports clean machining and improved surface appearance

Typical Applications

• Semi‑synthetic metalworking fluids
• Fully synthetic metalworking fluids
• Machining, grinding, and cutting operations
• Short‑term corrosion protection during manufacture and handling

Typical Treat Rates

Treat rates should be determined by the customer based on formulation design, operating conditions, and required corrosion performance.

Typical usage range:

• 0.25–2.0%

Higher treat rates will generally improve resistance to flash rusting, particularly in humid environments or where drainage is limited.

Performance will vary depending on the concentration used, water quality (with chloride content being particularly influential), and the environmental conditions the component is exposed to, including temperature, humidity, and whether exposure is indoors or outdoors.

As operating conditions can differ significantly between applications, performance should be confirmed through practical trials under the intended use conditions.

Material Suitability

• Ferrous alloys

Bor‑X is designed for use in multi‑metal systems but is especially effective at preventing staining and corrosion on ferrous substrates.

Typical Technical Data

Values shown are typical and do not constitute a specification.

Performance Expectations

Rustbuster Bor‑X is intended to provide short‑term flash rust protection as part of a metalworking fluid system. Under normal workshop conditions, it helps protect machined ferrous components during processing and handling prior to further finishing or coating operations.

Bor‑X is not designed to replace long‑term corrosion protection methods such as storage oils, VCIs, or protective coatings.

Why Choose Rustbuster Bor‑X?

With over 25 years of experience in corrosion control, Rustbuster products are trusted by professionals who need reliable, no‑nonsense performance. Bor‑X delivers dependable flash rust protection where it matters most — inside the fluid, during the process.