Crc SP 400 Anti Rust Coating

Crc SP 400 Anti Rust Coating

Long-term outdoor and indoor corrosion inhibitor. CRC SP 400 ANTI RUST COATING is a long-term, outdoor and indoor corrosion inhibitor for machined surfaces and assemblies subjected to long periods of storage or adverse shipping conditions.The amber, dry, waxy film never becomes brittle and is highly resistant to humidity and severe corrosive atmospheres.




  • Long-term protection (up to 1 year outdoors) for all metals during shipment or extended storage

  • Waxy film seals out moisture effectively

  • Highly resistant to humidity and salt spray

  • Can be removed or diluted, for film thickness variation, with petroleum solvents

  • Aerosols use hydrocarbon propellant for controlled application and film thickness

  • Specifications :

meets Mil-C-16173, grade 4

NSN 8030-17-039-7214

USDA,class P1


  • Protection of finished components, in-process parts, in-transit goods, raw materials, structural steel.

  • Effective corrosion shield for overseas shipments, ‘winterising’ of farm machinery, outdoor storage.

  • Protection of equipment, tools, dies, molds, jigs, pipes, shafts, housings, wire ropes, valves, gears.

  • To be used for brine and chloride resistance in refrigeration plants.

  • In paper and pulp plants.

  • As a cable end sealer and pipe joint protector in utilities .

  • Protection of air conditioning and electrical equipment in hospitals and educational institutions.

  • In airport and aircraft maintenance and construction.


  • Shake aerosol can well before use. Stir or mix bulk product to break its paraffin structure before dipping or brushing applications.

  • Mask area not to be treated. If necessary, remove by solvent cleaners (CRC Fast Dry Degreaser, CRC Industrial Degreaser,…).

  • Film thickness may be adjusted by thinning with petroleum solvents, but corrosion resistance varies with film thickness (see typical properties).

For applications in wet or very humid conditions, CRC 3-36 should be applied first for complete moisture displacement. Allow then 2 to 4 hours for solvent evaporation before SP 400 is applied.

  • When finished spraying, clean aerosol valve by turning can upside down and pressing actuator until only propellant escapes.

  • Do not use on energised equipment. Use in well ventilated areas.

  • A Safety data sheet (MSDS) according EU directive 93/112 is available for all CRC products.

TYPICAL(*) PRODUCT DATA (without propellant)

Appearance : amber, waxy

Specific gravity (@ 20°C)

aerosol : 0.87

bulk : 0.92

Distillation range of solvents

aerosol : 50-230°C

bulk : 160-230°C

Flash point (closed cup)

aerosol : < 0°C

bulk : 35°C

Dynamic viscosity (@ 20°C)

aerosol : 58,5 cPs

bulk : 200 to 700 mPa.s depending on paraffin structure

Freezing point

aerosol : – 30°C

bulk : -12°C


spraying : 20 m2/L

dipping : 5 m2/L

Solvent dissipation (@ 20°C, thin film) : 1-2 h.

Film properties (after evaporation of solvent)

Film appearance : dry, waxy

Film thickness : 10 – 50 µm

Salt spray resistance (**) (ASTM B 117)

@ 10 µm film thickness : 200 h.

@ 50 µm film thickness : > 500 h.

Auto-ignition temperature : > 250°C

Flow resistance (vertical) : > 80°C



aerosol : 12 x 300 ml

bulk : 4 x 5 L

20 L

200 L