VpCI®-389 Water-Based Removable Coating


VpCI ®-389 is a fast drying water-based removable coating that provides protection in harsh, outdoor, unsheltered applications. Provides multimetal protection. Excellent UV resistance. Can be matched to some custom colors. Provides a dry, slightly tacky film.





VpCI®-389 is available in 5 gallon (19 L) pails, 55 gallon (208 L) metal drums, liquid totes, and bulk.
To ensure best product performance, store in original packaging, indoors, and out of direct sunlight at 40-100 oF (4-38 oC).
Shelf life: 2 years.



Surface Preparation

Substrate should be free of grease, oil, dirt, fingerprints, drawing compounds, rust inhibitors (except Cortec® approved), or any other surface contamination that could affect adhesion. For bare metal applications, Cortec® recommends a NACE #3/SSPC-SP6. Consult Cortec® Technical Service and/ or test system adhesion prior to full scale application.

Note: Make sure dew point is more than 5 °F (2 °C) less than air temperature for application. Power agitate to a uniform consistency using a “squirrel cage” type mixer, hand-held drill mixer, or other equivalent method. VpCI®-389 can be applied by spray, roll, brush, or dip.

Typical Equipment Setups

HVLP / Conventional Spray

• Tip 0.02”-0.11” (0.5-2.8 mm) dependent upon pressures and viscosity
• Air Pressure 45-55 psi
• Fluid Pressure 10 psi
• Fluid hose should be ⅜” (0.95 cm) I.D. with a maximum length of 50 feet (15.2 m). ¼” (0.64 cm) I.D. fluid hose can be used, but pressures may need to be adjusted. Pot should always have dual regulation and be kept at same elevation as spray gun.

Air Assisted Airless / Airless

• Tip 0.015”-0.035” (0.38-0.89 mm) dependent upon pressures and viscosity
• Pressure 1800-2500 psi
• Hose should be ⅜” (0.95 cm) I.D. minimum, but a ¼” (0.64 cm) I.D. whip end section may be used for ease of application. A maximum length of 100 feet (30.5 m) is suggested.



Clean tools/equipment immediately after use with water when coating is still wet. For removal of VpCI®-389 applied to a metal surface, use a VpCI®-41x Series alkaline cleaner/ degreaser. Follow mfg’s safety recommendations when using any solvent.



Volume Solids 37.10%
Gloss (ASTM D532)
VOCs (ASTM D3960) 0.1 lbs/gal (12 g/L)
Viscosity 5,500-10,000 Santipuaz
Pencil Hardness  (ASTM   D3363)
Spreading Rate 595 sq.ft/gal @ 1.0 mils DFT

(14.6 sq.m/L @ 25 μm)

Weight per Gallon 8.32 lbs/gal (1.00 kg/L)
Flash Point 201,2 °F (94 °C)
Recommended    DFT 1.0-2.0 mils (25-50 μm)
Recommended WFT 2.7-5.4 mils (67,5-135 μm)
Dry to Touch 10-60 min
Dry to Handle 20-60 min
Recoat Time
Force Dry 15-20 min @ 150 °F (65 °C)
Full Cure 3-7 days
Salt Spray (ASTM B117) 600 hrs
Humidity (ASTM D1748) 1000 hrs
Adhesion (ASTM D3359)
Flexibility (ASTM D522) ½” mandrel (1.27 cm)

All tests performed after a 7 day cure at ambient temperature.